A fraction is written in terms of two parts: the number on top is called the numerator and the number on the bottom is called the denominator. We can use the division method to solve this question. To get a decimal, simply divide the numerator 87 by the denominator 21:
87 (numerator) ÷ 21 (denominator) = 4.14
As a result, you get 4.14 as your answer when you convert 87/21 to a decimal.