Answer :

To find 2/3 of a number, you multiply it by the fraction 2/3, which is the same as dividing it by 3 and then multiplying it by 2:

21.00 ÷ 3 = 7.00

7.00 × 2 = 14.00

So, 2/3 of $21.00 is $14.00.
If you divide 21 by 3 you get 7. So each 3rd is worth $7. So 2/3rds would be $14.