Hi there! The answer is $220
If 0.3% of a certain number equals $0.66,
then 0.1% of that number equals 0.66 / 3 = $ 0.22.
If we want to know the original number we must multiply by 1000 (since 0.1% * 1000 = 100%). We get the following:
0.22 * 1000 = $220
Therefore, 0.3% of $220 is $0.66
