Answer
Multiples of 816 are:
816, 1632, 2448, 3264, 4080, 4896, 5712, 6528, 7344, 8160, 8976, 9792, 10608, 11424, 12240, 13056, 13872, 14688, 15504, 16320, 17136, 17952, 18768, 19584, 20400, 21216, 22032, 22848, 23664, 24480, 25296, 26112, 26928, 27744, 28560, 29376, 30192, 31008, 31824, 32640, 33456, 34272, 35088, 35904, 36720, 37536, 38352, 39168, 39984
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