Answer
Multiples of 823 are:
823, 1646, 2469, 3292, 4115, 4938, 5761, 6584, 7407, 8230, 9053, 9876, 10699, 11522, 12345, 13168, 13991, 14814, 15637, 16460, 17283, 18106, 18929, 19752, 20575, 21398, 22221, 23044, 23867, 24690, 25513, 26336, 27159, 27982, 28805, 29628, 30451, 31274, 32097, 32920, 33743, 34566, 35389, 36212, 37035, 37858, 38681, 39504, 40327
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