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 28:
90 (numerator) ÷ 28 (denominator) = 3.21
As a result, you get 3.21 as your answer when you convert 3 6/28 (or 90/28) to a decimal.