First you need to convert 23% to a number by moving the decimal to the left 2 places. This gives you .23.
Then you would just multiply .23 * 640.
Therefore, 23% of $640 is $147.20
23% of $640 is $147.20. To find this, we convert the percentage to a decimal (0.23) and then multiply it by $640 to get the result. Thus, $640 multiplied by 0.23 equals $147.20.
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