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 24:
126 (numerator) ÷ 24 (denominator) = 5.25
As a result, you get 5.25 as your answer when you convert 2 78/24 (or 126/24) to a decimal.