Answer
Multiples of 1581 are:
1581, 3162, 4743, 6324, 7905, 9486, 11067, 12648, 14229, 15810, 17391, 18972, 20553, 22134, 23715, 25296, 26877, 28458, 30039, 31620, 33201, 34782, 36363, 37944, 39525, 41106, 42687, 44268, 45849, 47430, 49011, 50592, 52173, 53754, 55335, 56916, 58497, 60078, 61659, 63240, 64821, 66402, 67983, 69564, 71145, 72726, 74307, 75888, 77469
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