5/9 of 81 is 45.
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1/9 of 81 is 9
One ninth times one ninth is equal to one over eighty-one (1/81). This can be calculated by multiplying the numerators (1 x 1) to get 1, and the denominators (9 x 9) to get 81. Therefore, the result of one ninth times one ninth is 1/81.
(81 ÷ 9) × 2 = 18
9= 1/9 * 81= 81/9= 9
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