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 145 by the denominator 25:
145 (numerator) ÷ 25 (denominator) = 5.8
As a result, you get 5.8 as your answer when you convert 3 70/25 (or 145/25) to a decimal.