One method to convert 80/21 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 80 by the denominator 21:
80 (numerator) ÷ 21 (denominator) = 3.81
And there you go! We got 3.81 as the answer when you convert 2 38/21 (or 80/21) to a decimal.