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 138 by the denominator 8:
138 (numerator) ÷ 8 (denominator) = 17.25
As a result, you get 17.25 as your answer when you convert 5 98/8 (or 138/8) to a decimal.