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 120 by the denominator 11:
120 (numerator) ÷ 11 (denominator) = 10.91
As a result, you get 10.91 as your answer when you convert 9 21/11 (or 120/11) to a decimal.