Answer
Multiples of 1647 are:
1647, 3294, 4941, 6588, 8235, 9882, 11529, 13176, 14823, 16470, 18117, 19764, 21411, 23058, 24705, 26352, 27999, 29646, 31293, 32940, 34587, 36234, 37881, 39528, 41175, 42822, 44469, 46116, 47763, 49410, 51057, 52704, 54351, 55998, 57645, 59292, 60939, 62586, 64233, 65880, 67527, 69174, 70821, 72468, 74115, 75762, 77409, 79056, 80703
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