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)10.80.183.0/24
network10.80.183.0/24
broadcast10.80.183.255
first host10.80.183.1
last host10.80.183.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.80.183.0/24
address00001010.01010000.10110111.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.01010000.10110111.00000000
broadcast00001010.01010000.10110111.11111111
green = network part, grey = host part
hex0x0a50b700
decimal173061888
reverse dns0.183.80.10.in-addr.arpa
ipv4-mapped::ffff:a50:b700

/24 split into /32 · 256 subnets

close ×
#networkhost rangebroadcast
110.80.183.0/3210.80.183.0 – 10.80.183.010.80.183.0
210.80.183.1/3210.80.183.1 – 10.80.183.110.80.183.1
310.80.183.2/3210.80.183.2 – 10.80.183.210.80.183.2
410.80.183.3/3210.80.183.3 – 10.80.183.310.80.183.3
510.80.183.4/3210.80.183.4 – 10.80.183.410.80.183.4
610.80.183.5/3210.80.183.5 – 10.80.183.510.80.183.5
710.80.183.6/3210.80.183.6 – 10.80.183.610.80.183.6
810.80.183.7/3210.80.183.7 – 10.80.183.710.80.183.7
910.80.183.8/3210.80.183.8 – 10.80.183.810.80.183.8
1010.80.183.9/3210.80.183.9 – 10.80.183.910.80.183.9
1110.80.183.10/3210.80.183.10 – 10.80.183.1010.80.183.10
1210.80.183.11/3210.80.183.11 – 10.80.183.1110.80.183.11
1310.80.183.12/3210.80.183.12 – 10.80.183.1210.80.183.12
1410.80.183.13/3210.80.183.13 – 10.80.183.1310.80.183.13
1510.80.183.14/3210.80.183.14 – 10.80.183.1410.80.183.14
1610.80.183.15/3210.80.183.15 – 10.80.183.1510.80.183.15
1710.80.183.16/3210.80.183.16 – 10.80.183.1610.80.183.16
1810.80.183.17/3210.80.183.17 – 10.80.183.1710.80.183.17
1910.80.183.18/3210.80.183.18 – 10.80.183.1810.80.183.18
2010.80.183.19/3210.80.183.19 – 10.80.183.1910.80.183.19
2110.80.183.20/3210.80.183.20 – 10.80.183.2010.80.183.20
2210.80.183.21/3210.80.183.21 – 10.80.183.2110.80.183.21
2310.80.183.22/3210.80.183.22 – 10.80.183.2210.80.183.22
2410.80.183.23/3210.80.183.23 – 10.80.183.2310.80.183.23
2510.80.183.24/3210.80.183.24 – 10.80.183.2410.80.183.24
2610.80.183.25/3210.80.183.25 – 10.80.183.2510.80.183.25
2710.80.183.26/3210.80.183.26 – 10.80.183.2610.80.183.26
2810.80.183.27/3210.80.183.27 – 10.80.183.2710.80.183.27
2910.80.183.28/3210.80.183.28 – 10.80.183.2810.80.183.28
3010.80.183.29/3210.80.183.29 – 10.80.183.2910.80.183.29
3110.80.183.30/3210.80.183.30 – 10.80.183.3010.80.183.30
3210.80.183.31/3210.80.183.31 – 10.80.183.3110.80.183.31
3310.80.183.32/3210.80.183.32 – 10.80.183.3210.80.183.32
3410.80.183.33/3210.80.183.33 – 10.80.183.3310.80.183.33
3510.80.183.34/3210.80.183.34 – 10.80.183.3410.80.183.34
3610.80.183.35/3210.80.183.35 – 10.80.183.3510.80.183.35
3710.80.183.36/3210.80.183.36 – 10.80.183.3610.80.183.36
3810.80.183.37/3210.80.183.37 – 10.80.183.3710.80.183.37
3910.80.183.38/3210.80.183.38 – 10.80.183.3810.80.183.38
4010.80.183.39/3210.80.183.39 – 10.80.183.3910.80.183.39
4110.80.183.40/3210.80.183.40 – 10.80.183.4010.80.183.40
4210.80.183.41/3210.80.183.41 – 10.80.183.4110.80.183.41
4310.80.183.42/3210.80.183.42 – 10.80.183.4210.80.183.42
4410.80.183.43/3210.80.183.43 – 10.80.183.4310.80.183.43
4510.80.183.44/3210.80.183.44 – 10.80.183.4410.80.183.44
4610.80.183.45/3210.80.183.45 – 10.80.183.4510.80.183.45
4710.80.183.46/3210.80.183.46 – 10.80.183.4610.80.183.46
4810.80.183.47/3210.80.183.47 – 10.80.183.4710.80.183.47
4910.80.183.48/3210.80.183.48 – 10.80.183.4810.80.183.48
5010.80.183.49/3210.80.183.49 – 10.80.183.4910.80.183.49
5110.80.183.50/3210.80.183.50 – 10.80.183.5010.80.183.50
5210.80.183.51/3210.80.183.51 – 10.80.183.5110.80.183.51
5310.80.183.52/3210.80.183.52 – 10.80.183.5210.80.183.52
5410.80.183.53/3210.80.183.53 – 10.80.183.5310.80.183.53
5510.80.183.54/3210.80.183.54 – 10.80.183.5410.80.183.54
5610.80.183.55/3210.80.183.55 – 10.80.183.5510.80.183.55
5710.80.183.56/3210.80.183.56 – 10.80.183.5610.80.183.56
5810.80.183.57/3210.80.183.57 – 10.80.183.5710.80.183.57
5910.80.183.58/3210.80.183.58 – 10.80.183.5810.80.183.58
6010.80.183.59/3210.80.183.59 – 10.80.183.5910.80.183.59
6110.80.183.60/3210.80.183.60 – 10.80.183.6010.80.183.60
6210.80.183.61/3210.80.183.61 – 10.80.183.6110.80.183.61
6310.80.183.62/3210.80.183.62 – 10.80.183.6210.80.183.62
6410.80.183.63/3210.80.183.63 – 10.80.183.6310.80.183.63
6510.80.183.64/3210.80.183.64 – 10.80.183.6410.80.183.64
6610.80.183.65/3210.80.183.65 – 10.80.183.6510.80.183.65
6710.80.183.66/3210.80.183.66 – 10.80.183.6610.80.183.66
6810.80.183.67/3210.80.183.67 – 10.80.183.6710.80.183.67
6910.80.183.68/3210.80.183.68 – 10.80.183.6810.80.183.68
7010.80.183.69/3210.80.183.69 – 10.80.183.6910.80.183.69
7110.80.183.70/3210.80.183.70 – 10.80.183.7010.80.183.70
7210.80.183.71/3210.80.183.71 – 10.80.183.7110.80.183.71
7310.80.183.72/3210.80.183.72 – 10.80.183.7210.80.183.72
7410.80.183.73/3210.80.183.73 – 10.80.183.7310.80.183.73
7510.80.183.74/3210.80.183.74 – 10.80.183.7410.80.183.74
7610.80.183.75/3210.80.183.75 – 10.80.183.7510.80.183.75
7710.80.183.76/3210.80.183.76 – 10.80.183.7610.80.183.76
7810.80.183.77/3210.80.183.77 – 10.80.183.7710.80.183.77
7910.80.183.78/3210.80.183.78 – 10.80.183.7810.80.183.78
8010.80.183.79/3210.80.183.79 – 10.80.183.7910.80.183.79
8110.80.183.80/3210.80.183.80 – 10.80.183.8010.80.183.80
8210.80.183.81/3210.80.183.81 – 10.80.183.8110.80.183.81
8310.80.183.82/3210.80.183.82 – 10.80.183.8210.80.183.82
8410.80.183.83/3210.80.183.83 – 10.80.183.8310.80.183.83
8510.80.183.84/3210.80.183.84 – 10.80.183.8410.80.183.84
8610.80.183.85/3210.80.183.85 – 10.80.183.8510.80.183.85
8710.80.183.86/3210.80.183.86 – 10.80.183.8610.80.183.86
8810.80.183.87/3210.80.183.87 – 10.80.183.8710.80.183.87
8910.80.183.88/3210.80.183.88 – 10.80.183.8810.80.183.88
9010.80.183.89/3210.80.183.89 – 10.80.183.8910.80.183.89
9110.80.183.90/3210.80.183.90 – 10.80.183.9010.80.183.90
9210.80.183.91/3210.80.183.91 – 10.80.183.9110.80.183.91
9310.80.183.92/3210.80.183.92 – 10.80.183.9210.80.183.92
9410.80.183.93/3210.80.183.93 – 10.80.183.9310.80.183.93
9510.80.183.94/3210.80.183.94 – 10.80.183.9410.80.183.94
9610.80.183.95/3210.80.183.95 – 10.80.183.9510.80.183.95
9710.80.183.96/3210.80.183.96 – 10.80.183.9610.80.183.96
9810.80.183.97/3210.80.183.97 – 10.80.183.9710.80.183.97
9910.80.183.98/3210.80.183.98 – 10.80.183.9810.80.183.98
10010.80.183.99/3210.80.183.99 – 10.80.183.9910.80.183.99
10110.80.183.100/3210.80.183.100 – 10.80.183.10010.80.183.100
10210.80.183.101/3210.80.183.101 – 10.80.183.10110.80.183.101
10310.80.183.102/3210.80.183.102 – 10.80.183.10210.80.183.102
10410.80.183.103/3210.80.183.103 – 10.80.183.10310.80.183.103
10510.80.183.104/3210.80.183.104 – 10.80.183.10410.80.183.104
10610.80.183.105/3210.80.183.105 – 10.80.183.10510.80.183.105
10710.80.183.106/3210.80.183.106 – 10.80.183.10610.80.183.106
10810.80.183.107/3210.80.183.107 – 10.80.183.10710.80.183.107
10910.80.183.108/3210.80.183.108 – 10.80.183.10810.80.183.108
11010.80.183.109/3210.80.183.109 – 10.80.183.10910.80.183.109
11110.80.183.110/3210.80.183.110 – 10.80.183.11010.80.183.110
11210.80.183.111/3210.80.183.111 – 10.80.183.11110.80.183.111
11310.80.183.112/3210.80.183.112 – 10.80.183.11210.80.183.112
11410.80.183.113/3210.80.183.113 – 10.80.183.11310.80.183.113
11510.80.183.114/3210.80.183.114 – 10.80.183.11410.80.183.114
11610.80.183.115/3210.80.183.115 – 10.80.183.11510.80.183.115
11710.80.183.116/3210.80.183.116 – 10.80.183.11610.80.183.116
11810.80.183.117/3210.80.183.117 – 10.80.183.11710.80.183.117
11910.80.183.118/3210.80.183.118 – 10.80.183.11810.80.183.118
12010.80.183.119/3210.80.183.119 – 10.80.183.11910.80.183.119
12110.80.183.120/3210.80.183.120 – 10.80.183.12010.80.183.120
12210.80.183.121/3210.80.183.121 – 10.80.183.12110.80.183.121
12310.80.183.122/3210.80.183.122 – 10.80.183.12210.80.183.122
12410.80.183.123/3210.80.183.123 – 10.80.183.12310.80.183.123
12510.80.183.124/3210.80.183.124 – 10.80.183.12410.80.183.124
12610.80.183.125/3210.80.183.125 – 10.80.183.12510.80.183.125
12710.80.183.126/3210.80.183.126 – 10.80.183.12610.80.183.126
12810.80.183.127/3210.80.183.127 – 10.80.183.12710.80.183.127
12910.80.183.128/3210.80.183.128 – 10.80.183.12810.80.183.128
13010.80.183.129/3210.80.183.129 – 10.80.183.12910.80.183.129
13110.80.183.130/3210.80.183.130 – 10.80.183.13010.80.183.130
13210.80.183.131/3210.80.183.131 – 10.80.183.13110.80.183.131
13310.80.183.132/3210.80.183.132 – 10.80.183.13210.80.183.132
13410.80.183.133/3210.80.183.133 – 10.80.183.13310.80.183.133
13510.80.183.134/3210.80.183.134 – 10.80.183.13410.80.183.134
13610.80.183.135/3210.80.183.135 – 10.80.183.13510.80.183.135
13710.80.183.136/3210.80.183.136 – 10.80.183.13610.80.183.136
13810.80.183.137/3210.80.183.137 – 10.80.183.13710.80.183.137
13910.80.183.138/3210.80.183.138 – 10.80.183.13810.80.183.138
14010.80.183.139/3210.80.183.139 – 10.80.183.13910.80.183.139
14110.80.183.140/3210.80.183.140 – 10.80.183.14010.80.183.140
14210.80.183.141/3210.80.183.141 – 10.80.183.14110.80.183.141
14310.80.183.142/3210.80.183.142 – 10.80.183.14210.80.183.142
14410.80.183.143/3210.80.183.143 – 10.80.183.14310.80.183.143
14510.80.183.144/3210.80.183.144 – 10.80.183.14410.80.183.144
14610.80.183.145/3210.80.183.145 – 10.80.183.14510.80.183.145
14710.80.183.146/3210.80.183.146 – 10.80.183.14610.80.183.146
14810.80.183.147/3210.80.183.147 – 10.80.183.14710.80.183.147
14910.80.183.148/3210.80.183.148 – 10.80.183.14810.80.183.148
15010.80.183.149/3210.80.183.149 – 10.80.183.14910.80.183.149
15110.80.183.150/3210.80.183.150 – 10.80.183.15010.80.183.150
15210.80.183.151/3210.80.183.151 – 10.80.183.15110.80.183.151
15310.80.183.152/3210.80.183.152 – 10.80.183.15210.80.183.152
15410.80.183.153/3210.80.183.153 – 10.80.183.15310.80.183.153
15510.80.183.154/3210.80.183.154 – 10.80.183.15410.80.183.154
15610.80.183.155/3210.80.183.155 – 10.80.183.15510.80.183.155
15710.80.183.156/3210.80.183.156 – 10.80.183.15610.80.183.156
15810.80.183.157/3210.80.183.157 – 10.80.183.15710.80.183.157
15910.80.183.158/3210.80.183.158 – 10.80.183.15810.80.183.158
16010.80.183.159/3210.80.183.159 – 10.80.183.15910.80.183.159
16110.80.183.160/3210.80.183.160 – 10.80.183.16010.80.183.160
16210.80.183.161/3210.80.183.161 – 10.80.183.16110.80.183.161
16310.80.183.162/3210.80.183.162 – 10.80.183.16210.80.183.162
16410.80.183.163/3210.80.183.163 – 10.80.183.16310.80.183.163
16510.80.183.164/3210.80.183.164 – 10.80.183.16410.80.183.164
16610.80.183.165/3210.80.183.165 – 10.80.183.16510.80.183.165
16710.80.183.166/3210.80.183.166 – 10.80.183.16610.80.183.166
16810.80.183.167/3210.80.183.167 – 10.80.183.16710.80.183.167
16910.80.183.168/3210.80.183.168 – 10.80.183.16810.80.183.168
17010.80.183.169/3210.80.183.169 – 10.80.183.16910.80.183.169
17110.80.183.170/3210.80.183.170 – 10.80.183.17010.80.183.170
17210.80.183.171/3210.80.183.171 – 10.80.183.17110.80.183.171
17310.80.183.172/3210.80.183.172 – 10.80.183.17210.80.183.172
17410.80.183.173/3210.80.183.173 – 10.80.183.17310.80.183.173
17510.80.183.174/3210.80.183.174 – 10.80.183.17410.80.183.174
17610.80.183.175/3210.80.183.175 – 10.80.183.17510.80.183.175
17710.80.183.176/3210.80.183.176 – 10.80.183.17610.80.183.176
17810.80.183.177/3210.80.183.177 – 10.80.183.17710.80.183.177
17910.80.183.178/3210.80.183.178 – 10.80.183.17810.80.183.178
18010.80.183.179/3210.80.183.179 – 10.80.183.17910.80.183.179
18110.80.183.180/3210.80.183.180 – 10.80.183.18010.80.183.180
18210.80.183.181/3210.80.183.181 – 10.80.183.18110.80.183.181
18310.80.183.182/3210.80.183.182 – 10.80.183.18210.80.183.182
18410.80.183.183/3210.80.183.183 – 10.80.183.18310.80.183.183
18510.80.183.184/3210.80.183.184 – 10.80.183.18410.80.183.184
18610.80.183.185/3210.80.183.185 – 10.80.183.18510.80.183.185
18710.80.183.186/3210.80.183.186 – 10.80.183.18610.80.183.186
18810.80.183.187/3210.80.183.187 – 10.80.183.18710.80.183.187
18910.80.183.188/3210.80.183.188 – 10.80.183.18810.80.183.188
19010.80.183.189/3210.80.183.189 – 10.80.183.18910.80.183.189
19110.80.183.190/3210.80.183.190 – 10.80.183.19010.80.183.190
19210.80.183.191/3210.80.183.191 – 10.80.183.19110.80.183.191
19310.80.183.192/3210.80.183.192 – 10.80.183.19210.80.183.192
19410.80.183.193/3210.80.183.193 – 10.80.183.19310.80.183.193
19510.80.183.194/3210.80.183.194 – 10.80.183.19410.80.183.194
19610.80.183.195/3210.80.183.195 – 10.80.183.19510.80.183.195
19710.80.183.196/3210.80.183.196 – 10.80.183.19610.80.183.196
19810.80.183.197/3210.80.183.197 – 10.80.183.19710.80.183.197
19910.80.183.198/3210.80.183.198 – 10.80.183.19810.80.183.198
20010.80.183.199/3210.80.183.199 – 10.80.183.19910.80.183.199
20110.80.183.200/3210.80.183.200 – 10.80.183.20010.80.183.200
20210.80.183.201/3210.80.183.201 – 10.80.183.20110.80.183.201
20310.80.183.202/3210.80.183.202 – 10.80.183.20210.80.183.202
20410.80.183.203/3210.80.183.203 – 10.80.183.20310.80.183.203
20510.80.183.204/3210.80.183.204 – 10.80.183.20410.80.183.204
20610.80.183.205/3210.80.183.205 – 10.80.183.20510.80.183.205
20710.80.183.206/3210.80.183.206 – 10.80.183.20610.80.183.206
20810.80.183.207/3210.80.183.207 – 10.80.183.20710.80.183.207
20910.80.183.208/3210.80.183.208 – 10.80.183.20810.80.183.208
21010.80.183.209/3210.80.183.209 – 10.80.183.20910.80.183.209
21110.80.183.210/3210.80.183.210 – 10.80.183.21010.80.183.210
21210.80.183.211/3210.80.183.211 – 10.80.183.21110.80.183.211
21310.80.183.212/3210.80.183.212 – 10.80.183.21210.80.183.212
21410.80.183.213/3210.80.183.213 – 10.80.183.21310.80.183.213
21510.80.183.214/3210.80.183.214 – 10.80.183.21410.80.183.214
21610.80.183.215/3210.80.183.215 – 10.80.183.21510.80.183.215
21710.80.183.216/3210.80.183.216 – 10.80.183.21610.80.183.216
21810.80.183.217/3210.80.183.217 – 10.80.183.21710.80.183.217
21910.80.183.218/3210.80.183.218 – 10.80.183.21810.80.183.218
22010.80.183.219/3210.80.183.219 – 10.80.183.21910.80.183.219
22110.80.183.220/3210.80.183.220 – 10.80.183.22010.80.183.220
22210.80.183.221/3210.80.183.221 – 10.80.183.22110.80.183.221
22310.80.183.222/3210.80.183.222 – 10.80.183.22210.80.183.222
22410.80.183.223/3210.80.183.223 – 10.80.183.22310.80.183.223
22510.80.183.224/3210.80.183.224 – 10.80.183.22410.80.183.224
22610.80.183.225/3210.80.183.225 – 10.80.183.22510.80.183.225
22710.80.183.226/3210.80.183.226 – 10.80.183.22610.80.183.226
22810.80.183.227/3210.80.183.227 – 10.80.183.22710.80.183.227
22910.80.183.228/3210.80.183.228 – 10.80.183.22810.80.183.228
23010.80.183.229/3210.80.183.229 – 10.80.183.22910.80.183.229
23110.80.183.230/3210.80.183.230 – 10.80.183.23010.80.183.230
23210.80.183.231/3210.80.183.231 – 10.80.183.23110.80.183.231
23310.80.183.232/3210.80.183.232 – 10.80.183.23210.80.183.232
23410.80.183.233/3210.80.183.233 – 10.80.183.23310.80.183.233
23510.80.183.234/3210.80.183.234 – 10.80.183.23410.80.183.234
23610.80.183.235/3210.80.183.235 – 10.80.183.23510.80.183.235
23710.80.183.236/3210.80.183.236 – 10.80.183.23610.80.183.236
23810.80.183.237/3210.80.183.237 – 10.80.183.23710.80.183.237
23910.80.183.238/3210.80.183.238 – 10.80.183.23810.80.183.238
24010.80.183.239/3210.80.183.239 – 10.80.183.23910.80.183.239
24110.80.183.240/3210.80.183.240 – 10.80.183.24010.80.183.240
24210.80.183.241/3210.80.183.241 – 10.80.183.24110.80.183.241
24310.80.183.242/3210.80.183.242 – 10.80.183.24210.80.183.242
24410.80.183.243/3210.80.183.243 – 10.80.183.24310.80.183.243
24510.80.183.244/3210.80.183.244 – 10.80.183.24410.80.183.244
24610.80.183.245/3210.80.183.245 – 10.80.183.24510.80.183.245
24710.80.183.246/3210.80.183.246 – 10.80.183.24610.80.183.246
24810.80.183.247/3210.80.183.247 – 10.80.183.24710.80.183.247
24910.80.183.248/3210.80.183.248 – 10.80.183.24810.80.183.248
25010.80.183.249/3210.80.183.249 – 10.80.183.24910.80.183.249
25110.80.183.250/3210.80.183.250 – 10.80.183.25010.80.183.250
25210.80.183.251/3210.80.183.251 – 10.80.183.25110.80.183.251
25310.80.183.252/3210.80.183.252 – 10.80.183.25210.80.183.252
25410.80.183.253/3210.80.183.253 – 10.80.183.25310.80.183.253
25510.80.183.254/3210.80.183.254 – 10.80.183.25410.80.183.254
25610.80.183.255/3210.80.183.255 – 10.80.183.25510.80.183.255
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 →