Answer
Multiples of 1215 are:
1215, 2430, 3645, 4860, 6075, 7290, 8505, 9720, 10935, 12150, 13365, 14580, 15795, 17010, 18225, 19440, 20655, 21870, 23085, 24300, 25515, 26730, 27945, 29160, 30375, 31590, 32805, 34020, 35235, 36450, 37665, 38880, 40095, 41310, 42525, 43740, 44955, 46170, 47385, 48600, 49815, 51030, 52245, 53460, 54675, 55890, 57105, 58320, 59535
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