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If you take 8 percent of a number and get 645, then what is that number? In other words, you know that 8 percent of a number is 645 and you want to know what that initial number is.

To solve this problem you multiply 645 by 100 and then divide the total by 8 as follows: (645 x 100) / 8

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

8062.5


Therefore, the answer to "645 is 8 percent of what number?" is 8062.5, and you can also derive that 8 percent of 8062.5 equals 645.

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