$ perl usemod.pl
0 * 3 = 0
0 * 6 = 0
0 * 4 = 0
0 * 6 * 4 = 0
1 * 3 = 3
1 * 6 = 6
1 * 4 = 4
1 * 6 * 4 = 24
2 * 3 = 6
2 * 6 = 12
2 * 4 = 8
2 * 6 * 4 = 48
3 * 3 = 9
3 * 6 = 18
3 * 4 = 12
3 * 6 * 4 = 72
4 * 3 = 12
4 * 6 = 24
4 * 4 = 16
4 * 6 * 4 = 96