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 139 by the denominator 11:
139 (numerator) ÷ 11 (denominator) = 12.64
As a result, you get 12.64 as your answer when you convert 8 51/11 (or 139/11) to a decimal.