ip
ipku.in

IPv4 Subnet Calculator

Enter an IP with a CIDR prefix or a subnet mask to see its network, broadcast, host range, and host count. You can also split the network into smaller subnets.

$ ipcalc
private IP (RFC 1918)10.80.167.0/24
network10.80.167.0/24
broadcast10.80.167.255
first host10.80.167.1
last host10.80.167.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.80.167.0/24
address00001010.01010000.10100111.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.01010000.10100111.00000000
broadcast00001010.01010000.10100111.11111111
green = network part, grey = host part
hex0x0a50a700
decimal173057792
reverse dns0.167.80.10.in-addr.arpa
ipv4-mapped::ffff:a50:a700

/24 split into /32 · 256 subnets

close ×
#networkhost rangebroadcast
110.80.167.0/3210.80.167.0 – 10.80.167.010.80.167.0
210.80.167.1/3210.80.167.1 – 10.80.167.110.80.167.1
310.80.167.2/3210.80.167.2 – 10.80.167.210.80.167.2
410.80.167.3/3210.80.167.3 – 10.80.167.310.80.167.3
510.80.167.4/3210.80.167.4 – 10.80.167.410.80.167.4
610.80.167.5/3210.80.167.5 – 10.80.167.510.80.167.5
710.80.167.6/3210.80.167.6 – 10.80.167.610.80.167.6
810.80.167.7/3210.80.167.7 – 10.80.167.710.80.167.7
910.80.167.8/3210.80.167.8 – 10.80.167.810.80.167.8
1010.80.167.9/3210.80.167.9 – 10.80.167.910.80.167.9
1110.80.167.10/3210.80.167.10 – 10.80.167.1010.80.167.10
1210.80.167.11/3210.80.167.11 – 10.80.167.1110.80.167.11
1310.80.167.12/3210.80.167.12 – 10.80.167.1210.80.167.12
1410.80.167.13/3210.80.167.13 – 10.80.167.1310.80.167.13
1510.80.167.14/3210.80.167.14 – 10.80.167.1410.80.167.14
1610.80.167.15/3210.80.167.15 – 10.80.167.1510.80.167.15
1710.80.167.16/3210.80.167.16 – 10.80.167.1610.80.167.16
1810.80.167.17/3210.80.167.17 – 10.80.167.1710.80.167.17
1910.80.167.18/3210.80.167.18 – 10.80.167.1810.80.167.18
2010.80.167.19/3210.80.167.19 – 10.80.167.1910.80.167.19
2110.80.167.20/3210.80.167.20 – 10.80.167.2010.80.167.20
2210.80.167.21/3210.80.167.21 – 10.80.167.2110.80.167.21
2310.80.167.22/3210.80.167.22 – 10.80.167.2210.80.167.22
2410.80.167.23/3210.80.167.23 – 10.80.167.2310.80.167.23
2510.80.167.24/3210.80.167.24 – 10.80.167.2410.80.167.24
2610.80.167.25/3210.80.167.25 – 10.80.167.2510.80.167.25
2710.80.167.26/3210.80.167.26 – 10.80.167.2610.80.167.26
2810.80.167.27/3210.80.167.27 – 10.80.167.2710.80.167.27
2910.80.167.28/3210.80.167.28 – 10.80.167.2810.80.167.28
3010.80.167.29/3210.80.167.29 – 10.80.167.2910.80.167.29
3110.80.167.30/3210.80.167.30 – 10.80.167.3010.80.167.30
3210.80.167.31/3210.80.167.31 – 10.80.167.3110.80.167.31
3310.80.167.32/3210.80.167.32 – 10.80.167.3210.80.167.32
3410.80.167.33/3210.80.167.33 – 10.80.167.3310.80.167.33
3510.80.167.34/3210.80.167.34 – 10.80.167.3410.80.167.34
3610.80.167.35/3210.80.167.35 – 10.80.167.3510.80.167.35
3710.80.167.36/3210.80.167.36 – 10.80.167.3610.80.167.36
3810.80.167.37/3210.80.167.37 – 10.80.167.3710.80.167.37
3910.80.167.38/3210.80.167.38 – 10.80.167.3810.80.167.38
4010.80.167.39/3210.80.167.39 – 10.80.167.3910.80.167.39
4110.80.167.40/3210.80.167.40 – 10.80.167.4010.80.167.40
4210.80.167.41/3210.80.167.41 – 10.80.167.4110.80.167.41
4310.80.167.42/3210.80.167.42 – 10.80.167.4210.80.167.42
4410.80.167.43/3210.80.167.43 – 10.80.167.4310.80.167.43
4510.80.167.44/3210.80.167.44 – 10.80.167.4410.80.167.44
4610.80.167.45/3210.80.167.45 – 10.80.167.4510.80.167.45
4710.80.167.46/3210.80.167.46 – 10.80.167.4610.80.167.46
4810.80.167.47/3210.80.167.47 – 10.80.167.4710.80.167.47
4910.80.167.48/3210.80.167.48 – 10.80.167.4810.80.167.48
5010.80.167.49/3210.80.167.49 – 10.80.167.4910.80.167.49
5110.80.167.50/3210.80.167.50 – 10.80.167.5010.80.167.50
5210.80.167.51/3210.80.167.51 – 10.80.167.5110.80.167.51
5310.80.167.52/3210.80.167.52 – 10.80.167.5210.80.167.52
5410.80.167.53/3210.80.167.53 – 10.80.167.5310.80.167.53
5510.80.167.54/3210.80.167.54 – 10.80.167.5410.80.167.54
5610.80.167.55/3210.80.167.55 – 10.80.167.5510.80.167.55
5710.80.167.56/3210.80.167.56 – 10.80.167.5610.80.167.56
5810.80.167.57/3210.80.167.57 – 10.80.167.5710.80.167.57
5910.80.167.58/3210.80.167.58 – 10.80.167.5810.80.167.58
6010.80.167.59/3210.80.167.59 – 10.80.167.5910.80.167.59
6110.80.167.60/3210.80.167.60 – 10.80.167.6010.80.167.60
6210.80.167.61/3210.80.167.61 – 10.80.167.6110.80.167.61
6310.80.167.62/3210.80.167.62 – 10.80.167.6210.80.167.62
6410.80.167.63/3210.80.167.63 – 10.80.167.6310.80.167.63
6510.80.167.64/3210.80.167.64 – 10.80.167.6410.80.167.64
6610.80.167.65/3210.80.167.65 – 10.80.167.6510.80.167.65
6710.80.167.66/3210.80.167.66 – 10.80.167.6610.80.167.66
6810.80.167.67/3210.80.167.67 – 10.80.167.6710.80.167.67
6910.80.167.68/3210.80.167.68 – 10.80.167.6810.80.167.68
7010.80.167.69/3210.80.167.69 – 10.80.167.6910.80.167.69
7110.80.167.70/3210.80.167.70 – 10.80.167.7010.80.167.70
7210.80.167.71/3210.80.167.71 – 10.80.167.7110.80.167.71
7310.80.167.72/3210.80.167.72 – 10.80.167.7210.80.167.72
7410.80.167.73/3210.80.167.73 – 10.80.167.7310.80.167.73
7510.80.167.74/3210.80.167.74 – 10.80.167.7410.80.167.74
7610.80.167.75/3210.80.167.75 – 10.80.167.7510.80.167.75
7710.80.167.76/3210.80.167.76 – 10.80.167.7610.80.167.76
7810.80.167.77/3210.80.167.77 – 10.80.167.7710.80.167.77
7910.80.167.78/3210.80.167.78 – 10.80.167.7810.80.167.78
8010.80.167.79/3210.80.167.79 – 10.80.167.7910.80.167.79
8110.80.167.80/3210.80.167.80 – 10.80.167.8010.80.167.80
8210.80.167.81/3210.80.167.81 – 10.80.167.8110.80.167.81
8310.80.167.82/3210.80.167.82 – 10.80.167.8210.80.167.82
8410.80.167.83/3210.80.167.83 – 10.80.167.8310.80.167.83
8510.80.167.84/3210.80.167.84 – 10.80.167.8410.80.167.84
8610.80.167.85/3210.80.167.85 – 10.80.167.8510.80.167.85
8710.80.167.86/3210.80.167.86 – 10.80.167.8610.80.167.86
8810.80.167.87/3210.80.167.87 – 10.80.167.8710.80.167.87
8910.80.167.88/3210.80.167.88 – 10.80.167.8810.80.167.88
9010.80.167.89/3210.80.167.89 – 10.80.167.8910.80.167.89
9110.80.167.90/3210.80.167.90 – 10.80.167.9010.80.167.90
9210.80.167.91/3210.80.167.91 – 10.80.167.9110.80.167.91
9310.80.167.92/3210.80.167.92 – 10.80.167.9210.80.167.92
9410.80.167.93/3210.80.167.93 – 10.80.167.9310.80.167.93
9510.80.167.94/3210.80.167.94 – 10.80.167.9410.80.167.94
9610.80.167.95/3210.80.167.95 – 10.80.167.9510.80.167.95
9710.80.167.96/3210.80.167.96 – 10.80.167.9610.80.167.96
9810.80.167.97/3210.80.167.97 – 10.80.167.9710.80.167.97
9910.80.167.98/3210.80.167.98 – 10.80.167.9810.80.167.98
10010.80.167.99/3210.80.167.99 – 10.80.167.9910.80.167.99
10110.80.167.100/3210.80.167.100 – 10.80.167.10010.80.167.100
10210.80.167.101/3210.80.167.101 – 10.80.167.10110.80.167.101
10310.80.167.102/3210.80.167.102 – 10.80.167.10210.80.167.102
10410.80.167.103/3210.80.167.103 – 10.80.167.10310.80.167.103
10510.80.167.104/3210.80.167.104 – 10.80.167.10410.80.167.104
10610.80.167.105/3210.80.167.105 – 10.80.167.10510.80.167.105
10710.80.167.106/3210.80.167.106 – 10.80.167.10610.80.167.106
10810.80.167.107/3210.80.167.107 – 10.80.167.10710.80.167.107
10910.80.167.108/3210.80.167.108 – 10.80.167.10810.80.167.108
11010.80.167.109/3210.80.167.109 – 10.80.167.10910.80.167.109
11110.80.167.110/3210.80.167.110 – 10.80.167.11010.80.167.110
11210.80.167.111/3210.80.167.111 – 10.80.167.11110.80.167.111
11310.80.167.112/3210.80.167.112 – 10.80.167.11210.80.167.112
11410.80.167.113/3210.80.167.113 – 10.80.167.11310.80.167.113
11510.80.167.114/3210.80.167.114 – 10.80.167.11410.80.167.114
11610.80.167.115/3210.80.167.115 – 10.80.167.11510.80.167.115
11710.80.167.116/3210.80.167.116 – 10.80.167.11610.80.167.116
11810.80.167.117/3210.80.167.117 – 10.80.167.11710.80.167.117
11910.80.167.118/3210.80.167.118 – 10.80.167.11810.80.167.118
12010.80.167.119/3210.80.167.119 – 10.80.167.11910.80.167.119
12110.80.167.120/3210.80.167.120 – 10.80.167.12010.80.167.120
12210.80.167.121/3210.80.167.121 – 10.80.167.12110.80.167.121
12310.80.167.122/3210.80.167.122 – 10.80.167.12210.80.167.122
12410.80.167.123/3210.80.167.123 – 10.80.167.12310.80.167.123
12510.80.167.124/3210.80.167.124 – 10.80.167.12410.80.167.124
12610.80.167.125/3210.80.167.125 – 10.80.167.12510.80.167.125
12710.80.167.126/3210.80.167.126 – 10.80.167.12610.80.167.126
12810.80.167.127/3210.80.167.127 – 10.80.167.12710.80.167.127
12910.80.167.128/3210.80.167.128 – 10.80.167.12810.80.167.128
13010.80.167.129/3210.80.167.129 – 10.80.167.12910.80.167.129
13110.80.167.130/3210.80.167.130 – 10.80.167.13010.80.167.130
13210.80.167.131/3210.80.167.131 – 10.80.167.13110.80.167.131
13310.80.167.132/3210.80.167.132 – 10.80.167.13210.80.167.132
13410.80.167.133/3210.80.167.133 – 10.80.167.13310.80.167.133
13510.80.167.134/3210.80.167.134 – 10.80.167.13410.80.167.134
13610.80.167.135/3210.80.167.135 – 10.80.167.13510.80.167.135
13710.80.167.136/3210.80.167.136 – 10.80.167.13610.80.167.136
13810.80.167.137/3210.80.167.137 – 10.80.167.13710.80.167.137
13910.80.167.138/3210.80.167.138 – 10.80.167.13810.80.167.138
14010.80.167.139/3210.80.167.139 – 10.80.167.13910.80.167.139
14110.80.167.140/3210.80.167.140 – 10.80.167.14010.80.167.140
14210.80.167.141/3210.80.167.141 – 10.80.167.14110.80.167.141
14310.80.167.142/3210.80.167.142 – 10.80.167.14210.80.167.142
14410.80.167.143/3210.80.167.143 – 10.80.167.14310.80.167.143
14510.80.167.144/3210.80.167.144 – 10.80.167.14410.80.167.144
14610.80.167.145/3210.80.167.145 – 10.80.167.14510.80.167.145
14710.80.167.146/3210.80.167.146 – 10.80.167.14610.80.167.146
14810.80.167.147/3210.80.167.147 – 10.80.167.14710.80.167.147
14910.80.167.148/3210.80.167.148 – 10.80.167.14810.80.167.148
15010.80.167.149/3210.80.167.149 – 10.80.167.14910.80.167.149
15110.80.167.150/3210.80.167.150 – 10.80.167.15010.80.167.150
15210.80.167.151/3210.80.167.151 – 10.80.167.15110.80.167.151
15310.80.167.152/3210.80.167.152 – 10.80.167.15210.80.167.152
15410.80.167.153/3210.80.167.153 – 10.80.167.15310.80.167.153
15510.80.167.154/3210.80.167.154 – 10.80.167.15410.80.167.154
15610.80.167.155/3210.80.167.155 – 10.80.167.15510.80.167.155
15710.80.167.156/3210.80.167.156 – 10.80.167.15610.80.167.156
15810.80.167.157/3210.80.167.157 – 10.80.167.15710.80.167.157
15910.80.167.158/3210.80.167.158 – 10.80.167.15810.80.167.158
16010.80.167.159/3210.80.167.159 – 10.80.167.15910.80.167.159
16110.80.167.160/3210.80.167.160 – 10.80.167.16010.80.167.160
16210.80.167.161/3210.80.167.161 – 10.80.167.16110.80.167.161
16310.80.167.162/3210.80.167.162 – 10.80.167.16210.80.167.162
16410.80.167.163/3210.80.167.163 – 10.80.167.16310.80.167.163
16510.80.167.164/3210.80.167.164 – 10.80.167.16410.80.167.164
16610.80.167.165/3210.80.167.165 – 10.80.167.16510.80.167.165
16710.80.167.166/3210.80.167.166 – 10.80.167.16610.80.167.166
16810.80.167.167/3210.80.167.167 – 10.80.167.16710.80.167.167
16910.80.167.168/3210.80.167.168 – 10.80.167.16810.80.167.168
17010.80.167.169/3210.80.167.169 – 10.80.167.16910.80.167.169
17110.80.167.170/3210.80.167.170 – 10.80.167.17010.80.167.170
17210.80.167.171/3210.80.167.171 – 10.80.167.17110.80.167.171
17310.80.167.172/3210.80.167.172 – 10.80.167.17210.80.167.172
17410.80.167.173/3210.80.167.173 – 10.80.167.17310.80.167.173
17510.80.167.174/3210.80.167.174 – 10.80.167.17410.80.167.174
17610.80.167.175/3210.80.167.175 – 10.80.167.17510.80.167.175
17710.80.167.176/3210.80.167.176 – 10.80.167.17610.80.167.176
17810.80.167.177/3210.80.167.177 – 10.80.167.17710.80.167.177
17910.80.167.178/3210.80.167.178 – 10.80.167.17810.80.167.178
18010.80.167.179/3210.80.167.179 – 10.80.167.17910.80.167.179
18110.80.167.180/3210.80.167.180 – 10.80.167.18010.80.167.180
18210.80.167.181/3210.80.167.181 – 10.80.167.18110.80.167.181
18310.80.167.182/3210.80.167.182 – 10.80.167.18210.80.167.182
18410.80.167.183/3210.80.167.183 – 10.80.167.18310.80.167.183
18510.80.167.184/3210.80.167.184 – 10.80.167.18410.80.167.184
18610.80.167.185/3210.80.167.185 – 10.80.167.18510.80.167.185
18710.80.167.186/3210.80.167.186 – 10.80.167.18610.80.167.186
18810.80.167.187/3210.80.167.187 – 10.80.167.18710.80.167.187
18910.80.167.188/3210.80.167.188 – 10.80.167.18810.80.167.188
19010.80.167.189/3210.80.167.189 – 10.80.167.18910.80.167.189
19110.80.167.190/3210.80.167.190 – 10.80.167.19010.80.167.190
19210.80.167.191/3210.80.167.191 – 10.80.167.19110.80.167.191
19310.80.167.192/3210.80.167.192 – 10.80.167.19210.80.167.192
19410.80.167.193/3210.80.167.193 – 10.80.167.19310.80.167.193
19510.80.167.194/3210.80.167.194 – 10.80.167.19410.80.167.194
19610.80.167.195/3210.80.167.195 – 10.80.167.19510.80.167.195
19710.80.167.196/3210.80.167.196 – 10.80.167.19610.80.167.196
19810.80.167.197/3210.80.167.197 – 10.80.167.19710.80.167.197
19910.80.167.198/3210.80.167.198 – 10.80.167.19810.80.167.198
20010.80.167.199/3210.80.167.199 – 10.80.167.19910.80.167.199
20110.80.167.200/3210.80.167.200 – 10.80.167.20010.80.167.200
20210.80.167.201/3210.80.167.201 – 10.80.167.20110.80.167.201
20310.80.167.202/3210.80.167.202 – 10.80.167.20210.80.167.202
20410.80.167.203/3210.80.167.203 – 10.80.167.20310.80.167.203
20510.80.167.204/3210.80.167.204 – 10.80.167.20410.80.167.204
20610.80.167.205/3210.80.167.205 – 10.80.167.20510.80.167.205
20710.80.167.206/3210.80.167.206 – 10.80.167.20610.80.167.206
20810.80.167.207/3210.80.167.207 – 10.80.167.20710.80.167.207
20910.80.167.208/3210.80.167.208 – 10.80.167.20810.80.167.208
21010.80.167.209/3210.80.167.209 – 10.80.167.20910.80.167.209
21110.80.167.210/3210.80.167.210 – 10.80.167.21010.80.167.210
21210.80.167.211/3210.80.167.211 – 10.80.167.21110.80.167.211
21310.80.167.212/3210.80.167.212 – 10.80.167.21210.80.167.212
21410.80.167.213/3210.80.167.213 – 10.80.167.21310.80.167.213
21510.80.167.214/3210.80.167.214 – 10.80.167.21410.80.167.214
21610.80.167.215/3210.80.167.215 – 10.80.167.21510.80.167.215
21710.80.167.216/3210.80.167.216 – 10.80.167.21610.80.167.216
21810.80.167.217/3210.80.167.217 – 10.80.167.21710.80.167.217
21910.80.167.218/3210.80.167.218 – 10.80.167.21810.80.167.218
22010.80.167.219/3210.80.167.219 – 10.80.167.21910.80.167.219
22110.80.167.220/3210.80.167.220 – 10.80.167.22010.80.167.220
22210.80.167.221/3210.80.167.221 – 10.80.167.22110.80.167.221
22310.80.167.222/3210.80.167.222 – 10.80.167.22210.80.167.222
22410.80.167.223/3210.80.167.223 – 10.80.167.22310.80.167.223
22510.80.167.224/3210.80.167.224 – 10.80.167.22410.80.167.224
22610.80.167.225/3210.80.167.225 – 10.80.167.22510.80.167.225
22710.80.167.226/3210.80.167.226 – 10.80.167.22610.80.167.226
22810.80.167.227/3210.80.167.227 – 10.80.167.22710.80.167.227
22910.80.167.228/3210.80.167.228 – 10.80.167.22810.80.167.228
23010.80.167.229/3210.80.167.229 – 10.80.167.22910.80.167.229
23110.80.167.230/3210.80.167.230 – 10.80.167.23010.80.167.230
23210.80.167.231/3210.80.167.231 – 10.80.167.23110.80.167.231
23310.80.167.232/3210.80.167.232 – 10.80.167.23210.80.167.232
23410.80.167.233/3210.80.167.233 – 10.80.167.23310.80.167.233
23510.80.167.234/3210.80.167.234 – 10.80.167.23410.80.167.234
23610.80.167.235/3210.80.167.235 – 10.80.167.23510.80.167.235
23710.80.167.236/3210.80.167.236 – 10.80.167.23610.80.167.236
23810.80.167.237/3210.80.167.237 – 10.80.167.23710.80.167.237
23910.80.167.238/3210.80.167.238 – 10.80.167.23810.80.167.238
24010.80.167.239/3210.80.167.239 – 10.80.167.23910.80.167.239
24110.80.167.240/3210.80.167.240 – 10.80.167.24010.80.167.240
24210.80.167.241/3210.80.167.241 – 10.80.167.24110.80.167.241
24310.80.167.242/3210.80.167.242 – 10.80.167.24210.80.167.242
24410.80.167.243/3210.80.167.243 – 10.80.167.24310.80.167.243
24510.80.167.244/3210.80.167.244 – 10.80.167.24410.80.167.244
24610.80.167.245/3210.80.167.245 – 10.80.167.24510.80.167.245
24710.80.167.246/3210.80.167.246 – 10.80.167.24610.80.167.246
24810.80.167.247/3210.80.167.247 – 10.80.167.24710.80.167.247
24910.80.167.248/3210.80.167.248 – 10.80.167.24810.80.167.248
25010.80.167.249/3210.80.167.249 – 10.80.167.24910.80.167.249
25110.80.167.250/3210.80.167.250 – 10.80.167.25010.80.167.250
25210.80.167.251/3210.80.167.251 – 10.80.167.25110.80.167.251
25310.80.167.252/3210.80.167.252 – 10.80.167.25210.80.167.252
25410.80.167.253/3210.80.167.253 – 10.80.167.25310.80.167.253
25510.80.167.254/3210.80.167.254 – 10.80.167.25410.80.167.254
25610.80.167.255/3210.80.167.255 – 10.80.167.25510.80.167.255
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /24
/00.0.0.04,294,967,2964,294,967,294-
/1128.0.0.02,147,483,6482,147,483,646-
/2192.0.0.01,073,741,8241,073,741,822-
/3224.0.0.0536,870,912536,870,910-
/4240.0.0.0268,435,456268,435,454-
/5248.0.0.0134,217,728134,217,726-
/6252.0.0.067,108,86467,108,862-
/7254.0.0.033,554,43233,554,430-
/8255.0.0.016,777,21616,777,214-
/9255.128.0.08,388,6088,388,606-
/10255.192.0.04,194,3044,194,302-
/11255.224.0.02,097,1522,097,150-
/12255.240.0.01,048,5761,048,574-
/13255.248.0.0524,288524,286-
/14255.252.0.0262,144262,142-
/15255.254.0.0131,072131,070-
/16255.255.0.065,53665,534-
/17255.255.128.032,76832,766-
/18255.255.192.016,38416,382-
/19255.255.224.08,1928,190-
/20255.255.240.04,0964,094-
/21255.255.248.02,0482,046-
/22255.255.252.01,0241,022-
/23255.255.254.0512510-
/24255.255.255.02562541
/25255.255.255.1281281262 split →
/26255.255.255.19264624 split →
/27255.255.255.22432308 split →
/28255.255.255.240161416 split →
/29255.255.255.2488632 split →
/30255.255.255.2524264 split →
/31255.255.255.25422128 split →
/32255.255.255.25511256 split →
02 / faq

About this calculator.

How do I use this subnet calculator?

▼

Type an IP address followed by a prefix, like 192.168.1.10/24, or by a subnet mask, like 192.168.1.10 255.255.255.0. Without a prefix it uses /24. Click a row in the table to split the network into smaller subnets.

Why are usable hosts always 2 fewer?

▼

The first address in a subnet is the network address and the last is the broadcast address, so neither can go to a device. The exceptions are /31 (point-to-point links, RFC 3021) and /32 (a single address), which use every address.

Can I use it from a terminal?

▼

Yes. curl 'ipku.in/en/tools/ipv4-subnet-calculator?q=192.168.1.10/24' returns the result as plain text.

Learn how to work it out →