Answer
Multiples of 678 are:
678, 1356, 2034, 2712, 3390, 4068, 4746, 5424, 6102, 6780, 7458, 8136, 8814, 9492, 10170, 10848, 11526, 12204, 12882, 13560, 14238, 14916, 15594, 16272, 16950, 17628, 18306, 18984, 19662, 20340, 21018, 21696, 22374, 23052, 23730, 24408, 25086, 25764, 26442, 27120, 27798, 28476, 29154, 29832, 30510, 31188, 31866, 32544, 33222
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