2a = 244
a = 244 : 2 = 122
5b = 675
b = 675 : 5 = 135
7c = 784
c = 784 : 7 = 112
6d = 234
d = 234 : 6 = 39
m : 8 = 24 rest 6
m = 24 * 8 + 6 = 198
n : 7 = 26 rest 5
n = 26 * 7 + 5 = 187
p : 2 = 64 rest 2
p = 64 * 2 + 2 = 130
68 : r = 3 rest 2
r = 68 : 3 + 2 = 68/3 + 2 = 74/3 = 24,6