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)10.2.198.0/24
network10.2.198.0/24
broadcast10.2.198.255
first host10.2.198.1
last host10.2.198.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.2.198.0/24
address00001010.00000010.11000110.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00000010.11000110.00000000
broadcast00001010.00000010.11000110.11111111
green = network part, grey = host part
hex0x0a02c600
decimal167953920
reverse dns0.198.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:c600

/24 split into /32 · 256 subnets

close ×
#networkhost rangebroadcast
110.2.198.0/3210.2.198.0 – 10.2.198.010.2.198.0
210.2.198.1/3210.2.198.1 – 10.2.198.110.2.198.1
310.2.198.2/3210.2.198.2 – 10.2.198.210.2.198.2
410.2.198.3/3210.2.198.3 – 10.2.198.310.2.198.3
510.2.198.4/3210.2.198.4 – 10.2.198.410.2.198.4
610.2.198.5/3210.2.198.5 – 10.2.198.510.2.198.5
710.2.198.6/3210.2.198.6 – 10.2.198.610.2.198.6
810.2.198.7/3210.2.198.7 – 10.2.198.710.2.198.7
910.2.198.8/3210.2.198.8 – 10.2.198.810.2.198.8
1010.2.198.9/3210.2.198.9 – 10.2.198.910.2.198.9
1110.2.198.10/3210.2.198.10 – 10.2.198.1010.2.198.10
1210.2.198.11/3210.2.198.11 – 10.2.198.1110.2.198.11
1310.2.198.12/3210.2.198.12 – 10.2.198.1210.2.198.12
1410.2.198.13/3210.2.198.13 – 10.2.198.1310.2.198.13
1510.2.198.14/3210.2.198.14 – 10.2.198.1410.2.198.14
1610.2.198.15/3210.2.198.15 – 10.2.198.1510.2.198.15
1710.2.198.16/3210.2.198.16 – 10.2.198.1610.2.198.16
1810.2.198.17/3210.2.198.17 – 10.2.198.1710.2.198.17
1910.2.198.18/3210.2.198.18 – 10.2.198.1810.2.198.18
2010.2.198.19/3210.2.198.19 – 10.2.198.1910.2.198.19
2110.2.198.20/3210.2.198.20 – 10.2.198.2010.2.198.20
2210.2.198.21/3210.2.198.21 – 10.2.198.2110.2.198.21
2310.2.198.22/3210.2.198.22 – 10.2.198.2210.2.198.22
2410.2.198.23/3210.2.198.23 – 10.2.198.2310.2.198.23
2510.2.198.24/3210.2.198.24 – 10.2.198.2410.2.198.24
2610.2.198.25/3210.2.198.25 – 10.2.198.2510.2.198.25
2710.2.198.26/3210.2.198.26 – 10.2.198.2610.2.198.26
2810.2.198.27/3210.2.198.27 – 10.2.198.2710.2.198.27
2910.2.198.28/3210.2.198.28 – 10.2.198.2810.2.198.28
3010.2.198.29/3210.2.198.29 – 10.2.198.2910.2.198.29
3110.2.198.30/3210.2.198.30 – 10.2.198.3010.2.198.30
3210.2.198.31/3210.2.198.31 – 10.2.198.3110.2.198.31
3310.2.198.32/3210.2.198.32 – 10.2.198.3210.2.198.32
3410.2.198.33/3210.2.198.33 – 10.2.198.3310.2.198.33
3510.2.198.34/3210.2.198.34 – 10.2.198.3410.2.198.34
3610.2.198.35/3210.2.198.35 – 10.2.198.3510.2.198.35
3710.2.198.36/3210.2.198.36 – 10.2.198.3610.2.198.36
3810.2.198.37/3210.2.198.37 – 10.2.198.3710.2.198.37
3910.2.198.38/3210.2.198.38 – 10.2.198.3810.2.198.38
4010.2.198.39/3210.2.198.39 – 10.2.198.3910.2.198.39
4110.2.198.40/3210.2.198.40 – 10.2.198.4010.2.198.40
4210.2.198.41/3210.2.198.41 – 10.2.198.4110.2.198.41
4310.2.198.42/3210.2.198.42 – 10.2.198.4210.2.198.42
4410.2.198.43/3210.2.198.43 – 10.2.198.4310.2.198.43
4510.2.198.44/3210.2.198.44 – 10.2.198.4410.2.198.44
4610.2.198.45/3210.2.198.45 – 10.2.198.4510.2.198.45
4710.2.198.46/3210.2.198.46 – 10.2.198.4610.2.198.46
4810.2.198.47/3210.2.198.47 – 10.2.198.4710.2.198.47
4910.2.198.48/3210.2.198.48 – 10.2.198.4810.2.198.48
5010.2.198.49/3210.2.198.49 – 10.2.198.4910.2.198.49
5110.2.198.50/3210.2.198.50 – 10.2.198.5010.2.198.50
5210.2.198.51/3210.2.198.51 – 10.2.198.5110.2.198.51
5310.2.198.52/3210.2.198.52 – 10.2.198.5210.2.198.52
5410.2.198.53/3210.2.198.53 – 10.2.198.5310.2.198.53
5510.2.198.54/3210.2.198.54 – 10.2.198.5410.2.198.54
5610.2.198.55/3210.2.198.55 – 10.2.198.5510.2.198.55
5710.2.198.56/3210.2.198.56 – 10.2.198.5610.2.198.56
5810.2.198.57/3210.2.198.57 – 10.2.198.5710.2.198.57
5910.2.198.58/3210.2.198.58 – 10.2.198.5810.2.198.58
6010.2.198.59/3210.2.198.59 – 10.2.198.5910.2.198.59
6110.2.198.60/3210.2.198.60 – 10.2.198.6010.2.198.60
6210.2.198.61/3210.2.198.61 – 10.2.198.6110.2.198.61
6310.2.198.62/3210.2.198.62 – 10.2.198.6210.2.198.62
6410.2.198.63/3210.2.198.63 – 10.2.198.6310.2.198.63
6510.2.198.64/3210.2.198.64 – 10.2.198.6410.2.198.64
6610.2.198.65/3210.2.198.65 – 10.2.198.6510.2.198.65
6710.2.198.66/3210.2.198.66 – 10.2.198.6610.2.198.66
6810.2.198.67/3210.2.198.67 – 10.2.198.6710.2.198.67
6910.2.198.68/3210.2.198.68 – 10.2.198.6810.2.198.68
7010.2.198.69/3210.2.198.69 – 10.2.198.6910.2.198.69
7110.2.198.70/3210.2.198.70 – 10.2.198.7010.2.198.70
7210.2.198.71/3210.2.198.71 – 10.2.198.7110.2.198.71
7310.2.198.72/3210.2.198.72 – 10.2.198.7210.2.198.72
7410.2.198.73/3210.2.198.73 – 10.2.198.7310.2.198.73
7510.2.198.74/3210.2.198.74 – 10.2.198.7410.2.198.74
7610.2.198.75/3210.2.198.75 – 10.2.198.7510.2.198.75
7710.2.198.76/3210.2.198.76 – 10.2.198.7610.2.198.76
7810.2.198.77/3210.2.198.77 – 10.2.198.7710.2.198.77
7910.2.198.78/3210.2.198.78 – 10.2.198.7810.2.198.78
8010.2.198.79/3210.2.198.79 – 10.2.198.7910.2.198.79
8110.2.198.80/3210.2.198.80 – 10.2.198.8010.2.198.80
8210.2.198.81/3210.2.198.81 – 10.2.198.8110.2.198.81
8310.2.198.82/3210.2.198.82 – 10.2.198.8210.2.198.82
8410.2.198.83/3210.2.198.83 – 10.2.198.8310.2.198.83
8510.2.198.84/3210.2.198.84 – 10.2.198.8410.2.198.84
8610.2.198.85/3210.2.198.85 – 10.2.198.8510.2.198.85
8710.2.198.86/3210.2.198.86 – 10.2.198.8610.2.198.86
8810.2.198.87/3210.2.198.87 – 10.2.198.8710.2.198.87
8910.2.198.88/3210.2.198.88 – 10.2.198.8810.2.198.88
9010.2.198.89/3210.2.198.89 – 10.2.198.8910.2.198.89
9110.2.198.90/3210.2.198.90 – 10.2.198.9010.2.198.90
9210.2.198.91/3210.2.198.91 – 10.2.198.9110.2.198.91
9310.2.198.92/3210.2.198.92 – 10.2.198.9210.2.198.92
9410.2.198.93/3210.2.198.93 – 10.2.198.9310.2.198.93
9510.2.198.94/3210.2.198.94 – 10.2.198.9410.2.198.94
9610.2.198.95/3210.2.198.95 – 10.2.198.9510.2.198.95
9710.2.198.96/3210.2.198.96 – 10.2.198.9610.2.198.96
9810.2.198.97/3210.2.198.97 – 10.2.198.9710.2.198.97
9910.2.198.98/3210.2.198.98 – 10.2.198.9810.2.198.98
10010.2.198.99/3210.2.198.99 – 10.2.198.9910.2.198.99
10110.2.198.100/3210.2.198.100 – 10.2.198.10010.2.198.100
10210.2.198.101/3210.2.198.101 – 10.2.198.10110.2.198.101
10310.2.198.102/3210.2.198.102 – 10.2.198.10210.2.198.102
10410.2.198.103/3210.2.198.103 – 10.2.198.10310.2.198.103
10510.2.198.104/3210.2.198.104 – 10.2.198.10410.2.198.104
10610.2.198.105/3210.2.198.105 – 10.2.198.10510.2.198.105
10710.2.198.106/3210.2.198.106 – 10.2.198.10610.2.198.106
10810.2.198.107/3210.2.198.107 – 10.2.198.10710.2.198.107
10910.2.198.108/3210.2.198.108 – 10.2.198.10810.2.198.108
11010.2.198.109/3210.2.198.109 – 10.2.198.10910.2.198.109
11110.2.198.110/3210.2.198.110 – 10.2.198.11010.2.198.110
11210.2.198.111/3210.2.198.111 – 10.2.198.11110.2.198.111
11310.2.198.112/3210.2.198.112 – 10.2.198.11210.2.198.112
11410.2.198.113/3210.2.198.113 – 10.2.198.11310.2.198.113
11510.2.198.114/3210.2.198.114 – 10.2.198.11410.2.198.114
11610.2.198.115/3210.2.198.115 – 10.2.198.11510.2.198.115
11710.2.198.116/3210.2.198.116 – 10.2.198.11610.2.198.116
11810.2.198.117/3210.2.198.117 – 10.2.198.11710.2.198.117
11910.2.198.118/3210.2.198.118 – 10.2.198.11810.2.198.118
12010.2.198.119/3210.2.198.119 – 10.2.198.11910.2.198.119
12110.2.198.120/3210.2.198.120 – 10.2.198.12010.2.198.120
12210.2.198.121/3210.2.198.121 – 10.2.198.12110.2.198.121
12310.2.198.122/3210.2.198.122 – 10.2.198.12210.2.198.122
12410.2.198.123/3210.2.198.123 – 10.2.198.12310.2.198.123
12510.2.198.124/3210.2.198.124 – 10.2.198.12410.2.198.124
12610.2.198.125/3210.2.198.125 – 10.2.198.12510.2.198.125
12710.2.198.126/3210.2.198.126 – 10.2.198.12610.2.198.126
12810.2.198.127/3210.2.198.127 – 10.2.198.12710.2.198.127
12910.2.198.128/3210.2.198.128 – 10.2.198.12810.2.198.128
13010.2.198.129/3210.2.198.129 – 10.2.198.12910.2.198.129
13110.2.198.130/3210.2.198.130 – 10.2.198.13010.2.198.130
13210.2.198.131/3210.2.198.131 – 10.2.198.13110.2.198.131
13310.2.198.132/3210.2.198.132 – 10.2.198.13210.2.198.132
13410.2.198.133/3210.2.198.133 – 10.2.198.13310.2.198.133
13510.2.198.134/3210.2.198.134 – 10.2.198.13410.2.198.134
13610.2.198.135/3210.2.198.135 – 10.2.198.13510.2.198.135
13710.2.198.136/3210.2.198.136 – 10.2.198.13610.2.198.136
13810.2.198.137/3210.2.198.137 – 10.2.198.13710.2.198.137
13910.2.198.138/3210.2.198.138 – 10.2.198.13810.2.198.138
14010.2.198.139/3210.2.198.139 – 10.2.198.13910.2.198.139
14110.2.198.140/3210.2.198.140 – 10.2.198.14010.2.198.140
14210.2.198.141/3210.2.198.141 – 10.2.198.14110.2.198.141
14310.2.198.142/3210.2.198.142 – 10.2.198.14210.2.198.142
14410.2.198.143/3210.2.198.143 – 10.2.198.14310.2.198.143
14510.2.198.144/3210.2.198.144 – 10.2.198.14410.2.198.144
14610.2.198.145/3210.2.198.145 – 10.2.198.14510.2.198.145
14710.2.198.146/3210.2.198.146 – 10.2.198.14610.2.198.146
14810.2.198.147/3210.2.198.147 – 10.2.198.14710.2.198.147
14910.2.198.148/3210.2.198.148 – 10.2.198.14810.2.198.148
15010.2.198.149/3210.2.198.149 – 10.2.198.14910.2.198.149
15110.2.198.150/3210.2.198.150 – 10.2.198.15010.2.198.150
15210.2.198.151/3210.2.198.151 – 10.2.198.15110.2.198.151
15310.2.198.152/3210.2.198.152 – 10.2.198.15210.2.198.152
15410.2.198.153/3210.2.198.153 – 10.2.198.15310.2.198.153
15510.2.198.154/3210.2.198.154 – 10.2.198.15410.2.198.154
15610.2.198.155/3210.2.198.155 – 10.2.198.15510.2.198.155
15710.2.198.156/3210.2.198.156 – 10.2.198.15610.2.198.156
15810.2.198.157/3210.2.198.157 – 10.2.198.15710.2.198.157
15910.2.198.158/3210.2.198.158 – 10.2.198.15810.2.198.158
16010.2.198.159/3210.2.198.159 – 10.2.198.15910.2.198.159
16110.2.198.160/3210.2.198.160 – 10.2.198.16010.2.198.160
16210.2.198.161/3210.2.198.161 – 10.2.198.16110.2.198.161
16310.2.198.162/3210.2.198.162 – 10.2.198.16210.2.198.162
16410.2.198.163/3210.2.198.163 – 10.2.198.16310.2.198.163
16510.2.198.164/3210.2.198.164 – 10.2.198.16410.2.198.164
16610.2.198.165/3210.2.198.165 – 10.2.198.16510.2.198.165
16710.2.198.166/3210.2.198.166 – 10.2.198.16610.2.198.166
16810.2.198.167/3210.2.198.167 – 10.2.198.16710.2.198.167
16910.2.198.168/3210.2.198.168 – 10.2.198.16810.2.198.168
17010.2.198.169/3210.2.198.169 – 10.2.198.16910.2.198.169
17110.2.198.170/3210.2.198.170 – 10.2.198.17010.2.198.170
17210.2.198.171/3210.2.198.171 – 10.2.198.17110.2.198.171
17310.2.198.172/3210.2.198.172 – 10.2.198.17210.2.198.172
17410.2.198.173/3210.2.198.173 – 10.2.198.17310.2.198.173
17510.2.198.174/3210.2.198.174 – 10.2.198.17410.2.198.174
17610.2.198.175/3210.2.198.175 – 10.2.198.17510.2.198.175
17710.2.198.176/3210.2.198.176 – 10.2.198.17610.2.198.176
17810.2.198.177/3210.2.198.177 – 10.2.198.17710.2.198.177
17910.2.198.178/3210.2.198.178 – 10.2.198.17810.2.198.178
18010.2.198.179/3210.2.198.179 – 10.2.198.17910.2.198.179
18110.2.198.180/3210.2.198.180 – 10.2.198.18010.2.198.180
18210.2.198.181/3210.2.198.181 – 10.2.198.18110.2.198.181
18310.2.198.182/3210.2.198.182 – 10.2.198.18210.2.198.182
18410.2.198.183/3210.2.198.183 – 10.2.198.18310.2.198.183
18510.2.198.184/3210.2.198.184 – 10.2.198.18410.2.198.184
18610.2.198.185/3210.2.198.185 – 10.2.198.18510.2.198.185
18710.2.198.186/3210.2.198.186 – 10.2.198.18610.2.198.186
18810.2.198.187/3210.2.198.187 – 10.2.198.18710.2.198.187
18910.2.198.188/3210.2.198.188 – 10.2.198.18810.2.198.188
19010.2.198.189/3210.2.198.189 – 10.2.198.18910.2.198.189
19110.2.198.190/3210.2.198.190 – 10.2.198.19010.2.198.190
19210.2.198.191/3210.2.198.191 – 10.2.198.19110.2.198.191
19310.2.198.192/3210.2.198.192 – 10.2.198.19210.2.198.192
19410.2.198.193/3210.2.198.193 – 10.2.198.19310.2.198.193
19510.2.198.194/3210.2.198.194 – 10.2.198.19410.2.198.194
19610.2.198.195/3210.2.198.195 – 10.2.198.19510.2.198.195
19710.2.198.196/3210.2.198.196 – 10.2.198.19610.2.198.196
19810.2.198.197/3210.2.198.197 – 10.2.198.19710.2.198.197
19910.2.198.198/3210.2.198.198 – 10.2.198.19810.2.198.198
20010.2.198.199/3210.2.198.199 – 10.2.198.19910.2.198.199
20110.2.198.200/3210.2.198.200 – 10.2.198.20010.2.198.200
20210.2.198.201/3210.2.198.201 – 10.2.198.20110.2.198.201
20310.2.198.202/3210.2.198.202 – 10.2.198.20210.2.198.202
20410.2.198.203/3210.2.198.203 – 10.2.198.20310.2.198.203
20510.2.198.204/3210.2.198.204 – 10.2.198.20410.2.198.204
20610.2.198.205/3210.2.198.205 – 10.2.198.20510.2.198.205
20710.2.198.206/3210.2.198.206 – 10.2.198.20610.2.198.206
20810.2.198.207/3210.2.198.207 – 10.2.198.20710.2.198.207
20910.2.198.208/3210.2.198.208 – 10.2.198.20810.2.198.208
21010.2.198.209/3210.2.198.209 – 10.2.198.20910.2.198.209
21110.2.198.210/3210.2.198.210 – 10.2.198.21010.2.198.210
21210.2.198.211/3210.2.198.211 – 10.2.198.21110.2.198.211
21310.2.198.212/3210.2.198.212 – 10.2.198.21210.2.198.212
21410.2.198.213/3210.2.198.213 – 10.2.198.21310.2.198.213
21510.2.198.214/3210.2.198.214 – 10.2.198.21410.2.198.214
21610.2.198.215/3210.2.198.215 – 10.2.198.21510.2.198.215
21710.2.198.216/3210.2.198.216 – 10.2.198.21610.2.198.216
21810.2.198.217/3210.2.198.217 – 10.2.198.21710.2.198.217
21910.2.198.218/3210.2.198.218 – 10.2.198.21810.2.198.218
22010.2.198.219/3210.2.198.219 – 10.2.198.21910.2.198.219
22110.2.198.220/3210.2.198.220 – 10.2.198.22010.2.198.220
22210.2.198.221/3210.2.198.221 – 10.2.198.22110.2.198.221
22310.2.198.222/3210.2.198.222 – 10.2.198.22210.2.198.222
22410.2.198.223/3210.2.198.223 – 10.2.198.22310.2.198.223
22510.2.198.224/3210.2.198.224 – 10.2.198.22410.2.198.224
22610.2.198.225/3210.2.198.225 – 10.2.198.22510.2.198.225
22710.2.198.226/3210.2.198.226 – 10.2.198.22610.2.198.226
22810.2.198.227/3210.2.198.227 – 10.2.198.22710.2.198.227
22910.2.198.228/3210.2.198.228 – 10.2.198.22810.2.198.228
23010.2.198.229/3210.2.198.229 – 10.2.198.22910.2.198.229
23110.2.198.230/3210.2.198.230 – 10.2.198.23010.2.198.230
23210.2.198.231/3210.2.198.231 – 10.2.198.23110.2.198.231
23310.2.198.232/3210.2.198.232 – 10.2.198.23210.2.198.232
23410.2.198.233/3210.2.198.233 – 10.2.198.23310.2.198.233
23510.2.198.234/3210.2.198.234 – 10.2.198.23410.2.198.234
23610.2.198.235/3210.2.198.235 – 10.2.198.23510.2.198.235
23710.2.198.236/3210.2.198.236 – 10.2.198.23610.2.198.236
23810.2.198.237/3210.2.198.237 – 10.2.198.23710.2.198.237
23910.2.198.238/3210.2.198.238 – 10.2.198.23810.2.198.238
24010.2.198.239/3210.2.198.239 – 10.2.198.23910.2.198.239
24110.2.198.240/3210.2.198.240 – 10.2.198.24010.2.198.240
24210.2.198.241/3210.2.198.241 – 10.2.198.24110.2.198.241
24310.2.198.242/3210.2.198.242 – 10.2.198.24210.2.198.242
24410.2.198.243/3210.2.198.243 – 10.2.198.24310.2.198.243
24510.2.198.244/3210.2.198.244 – 10.2.198.24410.2.198.244
24610.2.198.245/3210.2.198.245 – 10.2.198.24510.2.198.245
24710.2.198.246/3210.2.198.246 – 10.2.198.24610.2.198.246
24810.2.198.247/3210.2.198.247 – 10.2.198.24710.2.198.247
24910.2.198.248/3210.2.198.248 – 10.2.198.24810.2.198.248
25010.2.198.249/3210.2.198.249 – 10.2.198.24910.2.198.249
25110.2.198.250/3210.2.198.250 – 10.2.198.25010.2.198.250
25210.2.198.251/3210.2.198.251 – 10.2.198.25110.2.198.251
25310.2.198.252/3210.2.198.252 – 10.2.198.25210.2.198.252
25410.2.198.253/3210.2.198.253 – 10.2.198.25310.2.198.253
25510.2.198.254/3210.2.198.254 – 10.2.198.25410.2.198.254
25610.2.198.255/3210.2.198.255 – 10.2.198.25510.2.198.255
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 →