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 53 by the denominator 8:
53 (numerator) ÷ 8 (denominator) = 6.63
As a result, you get 6.63 as your answer when you convert 4 21/8 (or 53/8) to a decimal.