One method to convert 126/3 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 126 by the denominator 3:
126 (numerator) ÷ 3 (denominator) = 42
And there you go! We got 42 as the answer when you convert 13 87/3 (or 126/3) to a decimal.