Answer
Multiples of 1661 are:
1661, 3322, 4983, 6644, 8305, 9966, 11627, 13288, 14949, 16610, 18271, 19932, 21593, 23254, 24915, 26576, 28237, 29898, 31559, 33220, 34881, 36542, 38203, 39864, 41525, 43186, 44847, 46508, 48169, 49830, 51491, 53152, 54813, 56474, 58135, 59796, 61457, 63118, 64779, 66440, 68101, 69762, 71423, 73084, 74745, 76406, 78067, 79728, 81389
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