To find 2 3 of a whole number, you need to multiply the number by the numerator 2 and divide that product by the denominator 3 . Explanation: If you represent any whole number by n ; then 2 3 of that number is 2 3 n , or 2 n 3 Looking at the last form you can see that you are multiplying the number n by 2 and dividing the product by 3 . Example if: n = 666 2 3 × n = 2 3 × ( 6666 ) = 13332 3 = 4444 Similarly if: n = 1 2 3 × ( 1 ) = 2 3