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3,6,9,12,15,18,21,24
7, 14, 21
21,42 and 63 are the first three multiples
21, 42, 63.
21
63
6, 12, 18. 7, 14, 21.
14, 28, and 42
35, 70, 105
140, 280, 420
168, 336, 504