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 135 by the denominator 6:
135 (numerator) ÷ 6 (denominator) = 22.5
As a result, you get 22.5 as your answer when you convert 6 99/6 (or 135/6) to a decimal.