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If you take 40 percent of a number and get 644, then what is that number? In other words, you know that 40 percent of a number is 644 and you want to know what that initial number is.

To solve this problem you multiply 644 by 100 and then divide the total by 40 as follows: (644 x 100) / 40

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

1610


Therefore, the answer to "644 is 40 percent of what number?" is 1610, and you can also derive that 40 percent of 1610 equals 644.

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