The answer is 9.
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7/1 divided by 1/9 is the same as 7/1 * 9/1 = 63
11 and 1 ninth divided by 100 = 1/9
1/3 ÷ 1/9 = 3
1/9 or one ninth
To divide by a fraction, multiply by its reciprocal. In this instance, 1 / 1/9 = 1 x 9 = 9