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111 of them with a remainder of 1
Eleven.
That depends what those nine numbers are. If the numbers are 992, 1, 1, 1, 1, 1, 1, 1, and 1, then it is easy.If the numbers are all 9s, then it can be written 999 + (999 / 999) = 1000.
There are: 640/9 = 71 with a remainder of 1
11 with 1 remaining 100 - 1 = 99 = 9 x 11