One method to convert 66/18 to a decimal is by using the division method. Before we move ahead to the method, here is a quick recap on fractions: A fraction is a number representation that is broken down into two parts - the number on top is called the numerator, and the number on the bottom is called the denominator. To get a decimal using the division method, simply divide the numerator 66 by the denominator 18:
66 (numerator) ÷ 18 (denominator) = 3.67
And there you go! We got 3.67 as the answer when you convert 3 12/18 (or 66/18) to a decimal.