multiply by 3
3x5
15
4x5
20
5x5
25
6x5
30
7x5
35
1345673x1
1345673
3x6
18
4x6
24
5x6
30
6x6
36
7x6
42
60x2
120
3x7
21
4x7
28
5x7
35
6x7
42
7x7
49
70x3
210
3x8
24
4x8
32
5x8
40
6x8
48
7x8
56
80x5
400
3x9
27
4x9
36
5x9
45
6x9
54
7x9
63
90x4
360