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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
168, 336, 504
56, 112, 168
14, 28, 42
42, 84 and 126