Answer
Multiples of 2820 are:
2820, 5640, 8460, 11280, 14100, 16920, 19740, 22560, 25380, 28200, 31020, 33840, 36660, 39480, 42300, 45120, 47940, 50760, 53580, 56400, 59220, 62040, 64860, 67680, 70500, 73320, 76140, 78960, 81780, 84600, 87420, 90240, 93060, 95880, 98700, 101520, 104340, 107160, 109980, 112800, 115620, 118440, 121260, 124080, 126900, 129720, 132540, 135360, 138180
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