Answer
Multiples of 1111 are:
1111, 2222, 3333, 4444, 5555, 6666, 7777, 8888, 9999, 11110, 12221, 13332, 14443, 15554, 16665, 17776, 18887, 19998, 21109, 22220, 23331, 24442, 25553, 26664, 27775, 28886, 29997, 31108, 32219, 33330, 34441, 35552, 36663, 37774, 38885, 39996, 41107, 42218, 43329, 44440, 45551, 46662, 47773, 48884, 49995, 51106, 52217, 53328, 54439
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