Multiplying by 2 and 3
300 x 2
600
25 x 5
125
15 x 7
105
23 x 9
207
40 x 3
120
645 x 2
1290
68 x 4
272
42 x 6
252
65 x 8
520
333 x 3
999
242 x 3
726
75 x 4
300
51 x 7
357
62 x 9
558
34 x 5
170
395 x 3
1185
886 x 5
4430
451 x 7
3157
563 x 9
5067
558 x 6
3348
286 x 3
858
422 x 5
2110
460 x 7
3220
263 x 8
2104
231 x 22
5082