18:2 = 9, k = 9
2*9 = 18
20:2 = 10, k = 10
2*10 = 20
48:2 = 24, k = 24
2*24 = 48
96:2 = 48, k = 48
2*48 = 96
18:2 = 9, k = 9
2*9 = 18
20:2 = 10, k = 10
2*10 = 20
48:2 = 24, k = 24
2*24 = 48
96:2 = 48, k = 48
2*48 = 96