Multiply by
3
3
4x3
12
1x4
4
2x5
10
11x3
33
3x4
12
9x5
45
3x3
9
10x4
40
1x5
5
9x3
27
4x4
16
7x5
35
5x3
15
11x4
44
10x5
50
1x3
3
5x4
20
3x5
15
6x3
18
9x4
36
5x5
25
8x3
24
8x4
32
11x5
55
2x3
6
6x4
24
4x5
20
10x3
30
2x4
8
6x5
30
7x3
21
7x4
28
8x5
40
12x3
36
12x4
48
12x5
60