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 451 by the denominator 20:
451 (numerator) ÷ 20 (denominator) = 22.55
As a result, you get 22.55 as your answer when you convert 17 111/20 (or 451/20) to a decimal.