Answer
Multiples of 1620 are:
1620, 3240, 4860, 6480, 8100, 9720, 11340, 12960, 14580, 16200, 17820, 19440, 21060, 22680, 24300, 25920, 27540, 29160, 30780, 32400, 34020, 35640, 37260, 38880, 40500, 42120, 43740, 45360, 46980, 48600, 50220, 51840, 53460, 55080, 56700, 58320, 59940, 61560, 63180, 64800, 66420, 68040, 69660, 71280, 72900, 74520, 76140, 77760, 79380
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