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 109 by the denominator 9:
109 (numerator) ÷ 9 (denominator) = 12.11
As a result, you get 12.11 as your answer when you convert 12 1/9 (or 109/9) to a decimal.