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 3280 by the denominator 83 (which you can enter in any calculator):
3280 (numerator) ÷ 83 (denominator) = 39.52
And finally, you get 39.52 as your answer when you convert 39 43/83 (or 3280/83) to a decimal.