One method to convert 138/6 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 138 by the denominator 6:
138 (numerator) ÷ 6 (denominator) = 23
And there you go! We got 23 as the answer when you convert 8 90/6 (or 138/6) to a decimal.