Answer
Multiples of 1221 are:
1221, 2442, 3663, 4884, 6105, 7326, 8547, 9768, 10989, 12210, 13431, 14652, 15873, 17094, 18315, 19536, 20757, 21978, 23199, 24420, 25641, 26862, 28083, 29304, 30525, 31746, 32967, 34188, 35409, 36630, 37851, 39072, 40293, 41514, 42735, 43956, 45177, 46398, 47619, 48840, 50061, 51282, 52503, 53724, 54945, 56166, 57387, 58608, 59829
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