One method to convert 3631/80 to a decimal is by using the division method. Before we move ahead to the method, here is a quick recap on fractions: A fraction is a number representation that is broken down into two parts - the number on top is called the numerator, and the number on the bottom is called the denominator. To get a decimal using the division method, simply divide the numerator 3631 by the denominator 80:
3631 (numerator) ÷ 80 (denominator) = 45.39
And there you go! We got 45.39 as the answer when you convert 45 31/80 (or 3631/80) to a decimal.