One method to convert 87/30 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 87 by the denominator 30:
87 (numerator) ÷ 30 (denominator) = 2.9
And there you go! We got 2.9 as the answer when you convert 1 57/30 (or 87/30) to a decimal.