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 126 by the denominator 36:
126 (numerator) ÷ 36 (denominator) = 3.5
As a result, you get 3.5 as your answer when you convert 1 90/36 (or 126/36) to a decimal.