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 108 by the denominator 27:
108 (numerator) ÷ 27 (denominator) = 4
As a result, you get 4 as your answer when you convert 1 81/27 (or 108/27) to a decimal.