Answer
Multiples of 309 are:
309, 618, 927, 1236, 1545, 1854, 2163, 2472, 2781, 3090, 3399, 3708, 4017, 4326, 4635, 4944, 5253, 5562, 5871, 6180, 6489, 6798, 7107, 7416, 7725, 8034, 8343, 8652, 8961, 9270, 9579, 9888, 10197, 10506, 10815, 11124, 11433, 11742, 12051, 12360, 12669, 12978, 13287, 13596, 13905, 14214, 14523, 14832, 15141
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