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 21738 by the denominator 160:
21738 (numerator) ÷ 160 (denominator) = 135.86
As a result, you get 135.86 as your answer when you convert 135 138/160 (or 21738/160) to a decimal.