**Percentage Calculator**
https://www.omnicalculator.com/math/percentage

WebJan 8, 2023 · In our calculation, 40/100 * 20 could be done as (40 * 20)/100 (it's the same thing). 40 * 20 is 800. By moving the dot in 800 by two digits to the left, you get 8.00, and when you get rid of all unnecessary zeros, you obtain 8. In our calculator, enter 40 and 20 (so it reads "40% of 20" is 8).

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