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 90 by the denominator 5:
90 (numerator) ÷ 5 (denominator) = 18
As a result, you get 18 as your answer when you convert 10 40/5 (or 90/5) to a decimal.