Answer
Multiples of 1644 are:
1644, 3288, 4932, 6576, 8220, 9864, 11508, 13152, 14796, 16440, 18084, 19728, 21372, 23016, 24660, 26304, 27948, 29592, 31236, 32880, 34524, 36168, 37812, 39456, 41100, 42744, 44388, 46032, 47676, 49320, 50964, 52608, 54252, 55896, 57540, 59184, 60828, 62472, 64116, 65760, 67404, 69048, 70692, 72336, 73980, 75624, 77268, 78912, 80556
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