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)10.9.211.0/24
network10.9.211.0/24
broadcast10.9.211.255
first host10.9.211.1
last host10.9.211.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.9.211.0/24
address00001010.00001001.11010011.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00001001.11010011.00000000
broadcast00001010.00001001.11010011.11111111
green = network part, grey = host part
hex0x0a09d300
decimal168416000
reverse dns0.211.9.10.in-addr.arpa
ipv4-mapped::ffff:a09:d300

/24 split into /32 · 256 subnets

close ×
#networkhost rangebroadcast
110.9.211.0/3210.9.211.0 – 10.9.211.010.9.211.0
210.9.211.1/3210.9.211.1 – 10.9.211.110.9.211.1
310.9.211.2/3210.9.211.2 – 10.9.211.210.9.211.2
410.9.211.3/3210.9.211.3 – 10.9.211.310.9.211.3
510.9.211.4/3210.9.211.4 – 10.9.211.410.9.211.4
610.9.211.5/3210.9.211.5 – 10.9.211.510.9.211.5
710.9.211.6/3210.9.211.6 – 10.9.211.610.9.211.6
810.9.211.7/3210.9.211.7 – 10.9.211.710.9.211.7
910.9.211.8/3210.9.211.8 – 10.9.211.810.9.211.8
1010.9.211.9/3210.9.211.9 – 10.9.211.910.9.211.9
1110.9.211.10/3210.9.211.10 – 10.9.211.1010.9.211.10
1210.9.211.11/3210.9.211.11 – 10.9.211.1110.9.211.11
1310.9.211.12/3210.9.211.12 – 10.9.211.1210.9.211.12
1410.9.211.13/3210.9.211.13 – 10.9.211.1310.9.211.13
1510.9.211.14/3210.9.211.14 – 10.9.211.1410.9.211.14
1610.9.211.15/3210.9.211.15 – 10.9.211.1510.9.211.15
1710.9.211.16/3210.9.211.16 – 10.9.211.1610.9.211.16
1810.9.211.17/3210.9.211.17 – 10.9.211.1710.9.211.17
1910.9.211.18/3210.9.211.18 – 10.9.211.1810.9.211.18
2010.9.211.19/3210.9.211.19 – 10.9.211.1910.9.211.19
2110.9.211.20/3210.9.211.20 – 10.9.211.2010.9.211.20
2210.9.211.21/3210.9.211.21 – 10.9.211.2110.9.211.21
2310.9.211.22/3210.9.211.22 – 10.9.211.2210.9.211.22
2410.9.211.23/3210.9.211.23 – 10.9.211.2310.9.211.23
2510.9.211.24/3210.9.211.24 – 10.9.211.2410.9.211.24
2610.9.211.25/3210.9.211.25 – 10.9.211.2510.9.211.25
2710.9.211.26/3210.9.211.26 – 10.9.211.2610.9.211.26
2810.9.211.27/3210.9.211.27 – 10.9.211.2710.9.211.27
2910.9.211.28/3210.9.211.28 – 10.9.211.2810.9.211.28
3010.9.211.29/3210.9.211.29 – 10.9.211.2910.9.211.29
3110.9.211.30/3210.9.211.30 – 10.9.211.3010.9.211.30
3210.9.211.31/3210.9.211.31 – 10.9.211.3110.9.211.31
3310.9.211.32/3210.9.211.32 – 10.9.211.3210.9.211.32
3410.9.211.33/3210.9.211.33 – 10.9.211.3310.9.211.33
3510.9.211.34/3210.9.211.34 – 10.9.211.3410.9.211.34
3610.9.211.35/3210.9.211.35 – 10.9.211.3510.9.211.35
3710.9.211.36/3210.9.211.36 – 10.9.211.3610.9.211.36
3810.9.211.37/3210.9.211.37 – 10.9.211.3710.9.211.37
3910.9.211.38/3210.9.211.38 – 10.9.211.3810.9.211.38
4010.9.211.39/3210.9.211.39 – 10.9.211.3910.9.211.39
4110.9.211.40/3210.9.211.40 – 10.9.211.4010.9.211.40
4210.9.211.41/3210.9.211.41 – 10.9.211.4110.9.211.41
4310.9.211.42/3210.9.211.42 – 10.9.211.4210.9.211.42
4410.9.211.43/3210.9.211.43 – 10.9.211.4310.9.211.43
4510.9.211.44/3210.9.211.44 – 10.9.211.4410.9.211.44
4610.9.211.45/3210.9.211.45 – 10.9.211.4510.9.211.45
4710.9.211.46/3210.9.211.46 – 10.9.211.4610.9.211.46
4810.9.211.47/3210.9.211.47 – 10.9.211.4710.9.211.47
4910.9.211.48/3210.9.211.48 – 10.9.211.4810.9.211.48
5010.9.211.49/3210.9.211.49 – 10.9.211.4910.9.211.49
5110.9.211.50/3210.9.211.50 – 10.9.211.5010.9.211.50
5210.9.211.51/3210.9.211.51 – 10.9.211.5110.9.211.51
5310.9.211.52/3210.9.211.52 – 10.9.211.5210.9.211.52
5410.9.211.53/3210.9.211.53 – 10.9.211.5310.9.211.53
5510.9.211.54/3210.9.211.54 – 10.9.211.5410.9.211.54
5610.9.211.55/3210.9.211.55 – 10.9.211.5510.9.211.55
5710.9.211.56/3210.9.211.56 – 10.9.211.5610.9.211.56
5810.9.211.57/3210.9.211.57 – 10.9.211.5710.9.211.57
5910.9.211.58/3210.9.211.58 – 10.9.211.5810.9.211.58
6010.9.211.59/3210.9.211.59 – 10.9.211.5910.9.211.59
6110.9.211.60/3210.9.211.60 – 10.9.211.6010.9.211.60
6210.9.211.61/3210.9.211.61 – 10.9.211.6110.9.211.61
6310.9.211.62/3210.9.211.62 – 10.9.211.6210.9.211.62
6410.9.211.63/3210.9.211.63 – 10.9.211.6310.9.211.63
6510.9.211.64/3210.9.211.64 – 10.9.211.6410.9.211.64
6610.9.211.65/3210.9.211.65 – 10.9.211.6510.9.211.65
6710.9.211.66/3210.9.211.66 – 10.9.211.6610.9.211.66
6810.9.211.67/3210.9.211.67 – 10.9.211.6710.9.211.67
6910.9.211.68/3210.9.211.68 – 10.9.211.6810.9.211.68
7010.9.211.69/3210.9.211.69 – 10.9.211.6910.9.211.69
7110.9.211.70/3210.9.211.70 – 10.9.211.7010.9.211.70
7210.9.211.71/3210.9.211.71 – 10.9.211.7110.9.211.71
7310.9.211.72/3210.9.211.72 – 10.9.211.7210.9.211.72
7410.9.211.73/3210.9.211.73 – 10.9.211.7310.9.211.73
7510.9.211.74/3210.9.211.74 – 10.9.211.7410.9.211.74
7610.9.211.75/3210.9.211.75 – 10.9.211.7510.9.211.75
7710.9.211.76/3210.9.211.76 – 10.9.211.7610.9.211.76
7810.9.211.77/3210.9.211.77 – 10.9.211.7710.9.211.77
7910.9.211.78/3210.9.211.78 – 10.9.211.7810.9.211.78
8010.9.211.79/3210.9.211.79 – 10.9.211.7910.9.211.79
8110.9.211.80/3210.9.211.80 – 10.9.211.8010.9.211.80
8210.9.211.81/3210.9.211.81 – 10.9.211.8110.9.211.81
8310.9.211.82/3210.9.211.82 – 10.9.211.8210.9.211.82
8410.9.211.83/3210.9.211.83 – 10.9.211.8310.9.211.83
8510.9.211.84/3210.9.211.84 – 10.9.211.8410.9.211.84
8610.9.211.85/3210.9.211.85 – 10.9.211.8510.9.211.85
8710.9.211.86/3210.9.211.86 – 10.9.211.8610.9.211.86
8810.9.211.87/3210.9.211.87 – 10.9.211.8710.9.211.87
8910.9.211.88/3210.9.211.88 – 10.9.211.8810.9.211.88
9010.9.211.89/3210.9.211.89 – 10.9.211.8910.9.211.89
9110.9.211.90/3210.9.211.90 – 10.9.211.9010.9.211.90
9210.9.211.91/3210.9.211.91 – 10.9.211.9110.9.211.91
9310.9.211.92/3210.9.211.92 – 10.9.211.9210.9.211.92
9410.9.211.93/3210.9.211.93 – 10.9.211.9310.9.211.93
9510.9.211.94/3210.9.211.94 – 10.9.211.9410.9.211.94
9610.9.211.95/3210.9.211.95 – 10.9.211.9510.9.211.95
9710.9.211.96/3210.9.211.96 – 10.9.211.9610.9.211.96
9810.9.211.97/3210.9.211.97 – 10.9.211.9710.9.211.97
9910.9.211.98/3210.9.211.98 – 10.9.211.9810.9.211.98
10010.9.211.99/3210.9.211.99 – 10.9.211.9910.9.211.99
10110.9.211.100/3210.9.211.100 – 10.9.211.10010.9.211.100
10210.9.211.101/3210.9.211.101 – 10.9.211.10110.9.211.101
10310.9.211.102/3210.9.211.102 – 10.9.211.10210.9.211.102
10410.9.211.103/3210.9.211.103 – 10.9.211.10310.9.211.103
10510.9.211.104/3210.9.211.104 – 10.9.211.10410.9.211.104
10610.9.211.105/3210.9.211.105 – 10.9.211.10510.9.211.105
10710.9.211.106/3210.9.211.106 – 10.9.211.10610.9.211.106
10810.9.211.107/3210.9.211.107 – 10.9.211.10710.9.211.107
10910.9.211.108/3210.9.211.108 – 10.9.211.10810.9.211.108
11010.9.211.109/3210.9.211.109 – 10.9.211.10910.9.211.109
11110.9.211.110/3210.9.211.110 – 10.9.211.11010.9.211.110
11210.9.211.111/3210.9.211.111 – 10.9.211.11110.9.211.111
11310.9.211.112/3210.9.211.112 – 10.9.211.11210.9.211.112
11410.9.211.113/3210.9.211.113 – 10.9.211.11310.9.211.113
11510.9.211.114/3210.9.211.114 – 10.9.211.11410.9.211.114
11610.9.211.115/3210.9.211.115 – 10.9.211.11510.9.211.115
11710.9.211.116/3210.9.211.116 – 10.9.211.11610.9.211.116
11810.9.211.117/3210.9.211.117 – 10.9.211.11710.9.211.117
11910.9.211.118/3210.9.211.118 – 10.9.211.11810.9.211.118
12010.9.211.119/3210.9.211.119 – 10.9.211.11910.9.211.119
12110.9.211.120/3210.9.211.120 – 10.9.211.12010.9.211.120
12210.9.211.121/3210.9.211.121 – 10.9.211.12110.9.211.121
12310.9.211.122/3210.9.211.122 – 10.9.211.12210.9.211.122
12410.9.211.123/3210.9.211.123 – 10.9.211.12310.9.211.123
12510.9.211.124/3210.9.211.124 – 10.9.211.12410.9.211.124
12610.9.211.125/3210.9.211.125 – 10.9.211.12510.9.211.125
12710.9.211.126/3210.9.211.126 – 10.9.211.12610.9.211.126
12810.9.211.127/3210.9.211.127 – 10.9.211.12710.9.211.127
12910.9.211.128/3210.9.211.128 – 10.9.211.12810.9.211.128
13010.9.211.129/3210.9.211.129 – 10.9.211.12910.9.211.129
13110.9.211.130/3210.9.211.130 – 10.9.211.13010.9.211.130
13210.9.211.131/3210.9.211.131 – 10.9.211.13110.9.211.131
13310.9.211.132/3210.9.211.132 – 10.9.211.13210.9.211.132
13410.9.211.133/3210.9.211.133 – 10.9.211.13310.9.211.133
13510.9.211.134/3210.9.211.134 – 10.9.211.13410.9.211.134
13610.9.211.135/3210.9.211.135 – 10.9.211.13510.9.211.135
13710.9.211.136/3210.9.211.136 – 10.9.211.13610.9.211.136
13810.9.211.137/3210.9.211.137 – 10.9.211.13710.9.211.137
13910.9.211.138/3210.9.211.138 – 10.9.211.13810.9.211.138
14010.9.211.139/3210.9.211.139 – 10.9.211.13910.9.211.139
14110.9.211.140/3210.9.211.140 – 10.9.211.14010.9.211.140
14210.9.211.141/3210.9.211.141 – 10.9.211.14110.9.211.141
14310.9.211.142/3210.9.211.142 – 10.9.211.14210.9.211.142
14410.9.211.143/3210.9.211.143 – 10.9.211.14310.9.211.143
14510.9.211.144/3210.9.211.144 – 10.9.211.14410.9.211.144
14610.9.211.145/3210.9.211.145 – 10.9.211.14510.9.211.145
14710.9.211.146/3210.9.211.146 – 10.9.211.14610.9.211.146
14810.9.211.147/3210.9.211.147 – 10.9.211.14710.9.211.147
14910.9.211.148/3210.9.211.148 – 10.9.211.14810.9.211.148
15010.9.211.149/3210.9.211.149 – 10.9.211.14910.9.211.149
15110.9.211.150/3210.9.211.150 – 10.9.211.15010.9.211.150
15210.9.211.151/3210.9.211.151 – 10.9.211.15110.9.211.151
15310.9.211.152/3210.9.211.152 – 10.9.211.15210.9.211.152
15410.9.211.153/3210.9.211.153 – 10.9.211.15310.9.211.153
15510.9.211.154/3210.9.211.154 – 10.9.211.15410.9.211.154
15610.9.211.155/3210.9.211.155 – 10.9.211.15510.9.211.155
15710.9.211.156/3210.9.211.156 – 10.9.211.15610.9.211.156
15810.9.211.157/3210.9.211.157 – 10.9.211.15710.9.211.157
15910.9.211.158/3210.9.211.158 – 10.9.211.15810.9.211.158
16010.9.211.159/3210.9.211.159 – 10.9.211.15910.9.211.159
16110.9.211.160/3210.9.211.160 – 10.9.211.16010.9.211.160
16210.9.211.161/3210.9.211.161 – 10.9.211.16110.9.211.161
16310.9.211.162/3210.9.211.162 – 10.9.211.16210.9.211.162
16410.9.211.163/3210.9.211.163 – 10.9.211.16310.9.211.163
16510.9.211.164/3210.9.211.164 – 10.9.211.16410.9.211.164
16610.9.211.165/3210.9.211.165 – 10.9.211.16510.9.211.165
16710.9.211.166/3210.9.211.166 – 10.9.211.16610.9.211.166
16810.9.211.167/3210.9.211.167 – 10.9.211.16710.9.211.167
16910.9.211.168/3210.9.211.168 – 10.9.211.16810.9.211.168
17010.9.211.169/3210.9.211.169 – 10.9.211.16910.9.211.169
17110.9.211.170/3210.9.211.170 – 10.9.211.17010.9.211.170
17210.9.211.171/3210.9.211.171 – 10.9.211.17110.9.211.171
17310.9.211.172/3210.9.211.172 – 10.9.211.17210.9.211.172
17410.9.211.173/3210.9.211.173 – 10.9.211.17310.9.211.173
17510.9.211.174/3210.9.211.174 – 10.9.211.17410.9.211.174
17610.9.211.175/3210.9.211.175 – 10.9.211.17510.9.211.175
17710.9.211.176/3210.9.211.176 – 10.9.211.17610.9.211.176
17810.9.211.177/3210.9.211.177 – 10.9.211.17710.9.211.177
17910.9.211.178/3210.9.211.178 – 10.9.211.17810.9.211.178
18010.9.211.179/3210.9.211.179 – 10.9.211.17910.9.211.179
18110.9.211.180/3210.9.211.180 – 10.9.211.18010.9.211.180
18210.9.211.181/3210.9.211.181 – 10.9.211.18110.9.211.181
18310.9.211.182/3210.9.211.182 – 10.9.211.18210.9.211.182
18410.9.211.183/3210.9.211.183 – 10.9.211.18310.9.211.183
18510.9.211.184/3210.9.211.184 – 10.9.211.18410.9.211.184
18610.9.211.185/3210.9.211.185 – 10.9.211.18510.9.211.185
18710.9.211.186/3210.9.211.186 – 10.9.211.18610.9.211.186
18810.9.211.187/3210.9.211.187 – 10.9.211.18710.9.211.187
18910.9.211.188/3210.9.211.188 – 10.9.211.18810.9.211.188
19010.9.211.189/3210.9.211.189 – 10.9.211.18910.9.211.189
19110.9.211.190/3210.9.211.190 – 10.9.211.19010.9.211.190
19210.9.211.191/3210.9.211.191 – 10.9.211.19110.9.211.191
19310.9.211.192/3210.9.211.192 – 10.9.211.19210.9.211.192
19410.9.211.193/3210.9.211.193 – 10.9.211.19310.9.211.193
19510.9.211.194/3210.9.211.194 – 10.9.211.19410.9.211.194
19610.9.211.195/3210.9.211.195 – 10.9.211.19510.9.211.195
19710.9.211.196/3210.9.211.196 – 10.9.211.19610.9.211.196
19810.9.211.197/3210.9.211.197 – 10.9.211.19710.9.211.197
19910.9.211.198/3210.9.211.198 – 10.9.211.19810.9.211.198
20010.9.211.199/3210.9.211.199 – 10.9.211.19910.9.211.199
20110.9.211.200/3210.9.211.200 – 10.9.211.20010.9.211.200
20210.9.211.201/3210.9.211.201 – 10.9.211.20110.9.211.201
20310.9.211.202/3210.9.211.202 – 10.9.211.20210.9.211.202
20410.9.211.203/3210.9.211.203 – 10.9.211.20310.9.211.203
20510.9.211.204/3210.9.211.204 – 10.9.211.20410.9.211.204
20610.9.211.205/3210.9.211.205 – 10.9.211.20510.9.211.205
20710.9.211.206/3210.9.211.206 – 10.9.211.20610.9.211.206
20810.9.211.207/3210.9.211.207 – 10.9.211.20710.9.211.207
20910.9.211.208/3210.9.211.208 – 10.9.211.20810.9.211.208
21010.9.211.209/3210.9.211.209 – 10.9.211.20910.9.211.209
21110.9.211.210/3210.9.211.210 – 10.9.211.21010.9.211.210
21210.9.211.211/3210.9.211.211 – 10.9.211.21110.9.211.211
21310.9.211.212/3210.9.211.212 – 10.9.211.21210.9.211.212
21410.9.211.213/3210.9.211.213 – 10.9.211.21310.9.211.213
21510.9.211.214/3210.9.211.214 – 10.9.211.21410.9.211.214
21610.9.211.215/3210.9.211.215 – 10.9.211.21510.9.211.215
21710.9.211.216/3210.9.211.216 – 10.9.211.21610.9.211.216
21810.9.211.217/3210.9.211.217 – 10.9.211.21710.9.211.217
21910.9.211.218/3210.9.211.218 – 10.9.211.21810.9.211.218
22010.9.211.219/3210.9.211.219 – 10.9.211.21910.9.211.219
22110.9.211.220/3210.9.211.220 – 10.9.211.22010.9.211.220
22210.9.211.221/3210.9.211.221 – 10.9.211.22110.9.211.221
22310.9.211.222/3210.9.211.222 – 10.9.211.22210.9.211.222
22410.9.211.223/3210.9.211.223 – 10.9.211.22310.9.211.223
22510.9.211.224/3210.9.211.224 – 10.9.211.22410.9.211.224
22610.9.211.225/3210.9.211.225 – 10.9.211.22510.9.211.225
22710.9.211.226/3210.9.211.226 – 10.9.211.22610.9.211.226
22810.9.211.227/3210.9.211.227 – 10.9.211.22710.9.211.227
22910.9.211.228/3210.9.211.228 – 10.9.211.22810.9.211.228
23010.9.211.229/3210.9.211.229 – 10.9.211.22910.9.211.229
23110.9.211.230/3210.9.211.230 – 10.9.211.23010.9.211.230
23210.9.211.231/3210.9.211.231 – 10.9.211.23110.9.211.231
23310.9.211.232/3210.9.211.232 – 10.9.211.23210.9.211.232
23410.9.211.233/3210.9.211.233 – 10.9.211.23310.9.211.233
23510.9.211.234/3210.9.211.234 – 10.9.211.23410.9.211.234
23610.9.211.235/3210.9.211.235 – 10.9.211.23510.9.211.235
23710.9.211.236/3210.9.211.236 – 10.9.211.23610.9.211.236
23810.9.211.237/3210.9.211.237 – 10.9.211.23710.9.211.237
23910.9.211.238/3210.9.211.238 – 10.9.211.23810.9.211.238
24010.9.211.239/3210.9.211.239 – 10.9.211.23910.9.211.239
24110.9.211.240/3210.9.211.240 – 10.9.211.24010.9.211.240
24210.9.211.241/3210.9.211.241 – 10.9.211.24110.9.211.241
24310.9.211.242/3210.9.211.242 – 10.9.211.24210.9.211.242
24410.9.211.243/3210.9.211.243 – 10.9.211.24310.9.211.243
24510.9.211.244/3210.9.211.244 – 10.9.211.24410.9.211.244
24610.9.211.245/3210.9.211.245 – 10.9.211.24510.9.211.245
24710.9.211.246/3210.9.211.246 – 10.9.211.24610.9.211.246
24810.9.211.247/3210.9.211.247 – 10.9.211.24710.9.211.247
24910.9.211.248/3210.9.211.248 – 10.9.211.24810.9.211.248
25010.9.211.249/3210.9.211.249 – 10.9.211.24910.9.211.249
25110.9.211.250/3210.9.211.250 – 10.9.211.25010.9.211.250
25210.9.211.251/3210.9.211.251 – 10.9.211.25110.9.211.251
25310.9.211.252/3210.9.211.252 – 10.9.211.25210.9.211.252
25410.9.211.253/3210.9.211.253 – 10.9.211.25310.9.211.253
25510.9.211.254/3210.9.211.254 – 10.9.211.25410.9.211.254
25610.9.211.255/3210.9.211.255 – 10.9.211.25510.9.211.255
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 →