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 142 by the denominator 45:
142 (numerator) ÷ 45 (denominator) = 3.16
As a result, you get 3.16 as your answer when you convert 3 7/45 (or 142/45) to a decimal.