A fraction is usually split into two parts: the first part is the number on top, called the numerator; and the second part is the number on the bottom, called the denominator. These are both separated by a line called the “divisor line”. We can use the division method help to solve this question: to get a decimal, simply divide the numerator 5079 by the denominator 287 (which you can enter in any calculator):
5079 (numerator) ÷ 287 (denominator) = 17.7
And finally, you get 17.7 as your answer when you convert 17 200/287 (or 5079/287) to a decimal.