4's
4x2
8
6 x 3
18
8 x 6
48
10 x 10
100
12 x 3
36
4 x 4
16
6 x 6
36
8 x 8
64
10 x 200
2000
12 x 12
144
4 x 8
32
6 x 12
72
8 x 12
96
10 x 500
5000
12 x 120
1,440
4 x 11
44
6 x 15
90
8 x 45
360
10 x 6750
67500
12 x 500
6,000
4 x 14
56
6 x 21
126
8 x 325
2600
10 x 5,000,000
50,000,000
12 x 100,000,000
1,200,000,000