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 108 by the denominator 21:
108 (numerator) ÷ 21 (denominator) = 5.14
As a result, you get 5.14 as your answer when you convert 2 66/21 (or 108/21) to a decimal.