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 8:
143 (numerator) ÷ 8 (denominator) = 17.88
As a result, you get 17.88 as your answer when you convert 13 39/8 (or 143/8) to a decimal.