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 3855 by the denominator 105 (which you can enter in any calculator):
3855 (numerator) ÷ 105 (denominator) = 36.71
And finally, you get 36.71 as your answer when you convert 36 75/105 (or 3855/105) to a decimal.