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 21 by the denominator 125:
21 (numerator) ÷ 125 (denominator) = 0.17
As a result, you get 0.17 as your answer when you convert 21/125 to a decimal.