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 80:
21 (numerator) ÷ 80 (denominator) = 0.26
As a result, you get 0.26 as your answer when you convert 21/80 to a decimal.