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 15 by the denominator 70:

15 (numerator) ÷ 70 (denominator) = 0.21

As a result, you get 0.21 as your answer when you convert 15/70 to a decimal.