Answer
Multiples of 255 are:
255, 510, 765, 1020, 1275, 1530, 1785, 2040, 2295, 2550, 2805, 3060, 3315, 3570, 3825, 4080, 4335, 4590, 4845, 5100, 5355, 5610, 5865, 6120, 6375, 6630, 6885, 7140, 7395, 7650, 7905, 8160, 8415, 8670, 8925, 9180, 9435, 9690, 9945, 10200, 10455, 10710, 10965, 11220, 11475, 11730, 11985, 12240, 12495
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