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If you take 15 percent of a number and get 8640, then what is that number? In other words, you know that 15 percent of a number is 8640 and you want to know what that initial number is.

To solve this problem you multiply 8640 by 100 and then divide the total by 15 as follows: (8640 x 100) / 15

When we put that into our calculator, we get the following answer:

57600


Therefore, the answer to "8640 is 15 percent of what number?" is 57600, and you can also derive that 15 percent of 57600 equals 8640.

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