Answer
Multiples of 1980 are:
1980, 3960, 5940, 7920, 9900, 11880, 13860, 15840, 17820, 19800, 21780, 23760, 25740, 27720, 29700, 31680, 33660, 35640, 37620, 39600, 41580, 43560, 45540, 47520, 49500, 51480, 53460, 55440, 57420, 59400, 61380, 63360, 65340, 67320, 69300, 71280, 73260, 75240, 77220, 79200, 81180, 83160, 85140, 87120, 89100, 91080, 93060, 95040, 97020
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