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 143 by the denominator 6:
143 (numerator) ÷ 6 (denominator) = 23.83
As a result, you get 23.83 as your answer when you convert 21 17/6 (or 143/6) to a decimal.