Answer
Multiples of 1580 are:
1580, 3160, 4740, 6320, 7900, 9480, 11060, 12640, 14220, 15800, 17380, 18960, 20540, 22120, 23700, 25280, 26860, 28440, 30020, 31600, 33180, 34760, 36340, 37920, 39500, 41080, 42660, 44240, 45820, 47400, 48980, 50560, 52140, 53720, 55300, 56880, 58460, 60040, 61620, 63200, 64780, 66360, 67940, 69520, 71100, 72680, 74260, 75840, 77420
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