Dividing a 2-digit number by 2 1/3

1. Select a 2-digit number.
2. Multiply by 3.
3. Divide the result by 7.

   Example:

1. The 2-digit number chosen to divide by 2 1/3 is 42.
2. Multiply by 3: 3 x 42 = 126
3. Divide by 7: 126/7 = 18
4. So 42 divided by 2 1/3 = 18.

   See the pattern?

1. The 2-digit number chosen to divide by 2 1/3 is 73.
2. Multiply by 3: 3 x 73 = 219
3. Divide by 7: 219/7 = 31 2/7
4. So 73 divided by 2 1/3 = 31 2/7.

If the number chosen is divisible by 7, the quotient will be a whole number. If the number is not divisible by 7, a calculator user will get a long, inexact decimal, while your answer will be exact.