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 115 by the denominator 2:
115 (numerator) ÷ 2 (denominator) = 57.5
As a result, you get 57.5 as your answer when you convert 21 73/2 (or 115/2) to a decimal.