x5 and below
5 x 5
25
6 x 7
42
7 x 4
28
8 x 8
64
9 x 3
27
3 x 4
12
6 x 8
48
7 x 9
63
8 x 7
56
9 x 9
81
5 x 11
55
6 x 6
36
7 x 7
49
8 x 9
72
9 x 4
36
4 x 6
24
6 x 9
54
7 x 5
35
8 x 6
48
9 x 6
54
5 x 100
500
6 x 1,000
6,000
7 x 60
420
8 x 80
640
9 x 900
8,100