45
15,3
5,3,3
81
27,3
9,3,3
3,3,3,3
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45 15,3 5,3,3
45 15,3 5,3,3
36 18,2 9,2,2 3,3,2,2 45 15,3 5,3,3
81 Divide by three. 27,3 Divide by three. 9,3,3 Divide by three. 3,3,3,3 Stop.
45% can be represented as 45/100 or 0.45 You ask yourself if 45/100 is 81, what would be the value for 100/110 (which is 1) and you find that by dividing 81 by 45/100, which is the same as dividing 81 by 0.45 Hence the number is 81/0.45 = 8100/45 = 900/5 = 180