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 78 by the denominator 12:
78 (numerator) ÷ 12 (denominator) = 6.5
As a result, you get 6.5 as your answer when you convert 6 6/12 (or 78/12) to a decimal.