Answer
Multiples of 606 are:
606, 1212, 1818, 2424, 3030, 3636, 4242, 4848, 5454, 6060, 6666, 7272, 7878, 8484, 9090, 9696, 10302, 10908, 11514, 12120, 12726, 13332, 13938, 14544, 15150, 15756, 16362, 16968, 17574, 18180, 18786, 19392, 19998, 20604, 21210, 21816, 22422, 23028, 23634, 24240, 24846, 25452, 26058, 26664, 27270, 27876, 28482, 29088, 29694
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