decimal fraction = to make a fraction decimal it is necessary that the numerator is 10 or a power of 10, i.e., must be the number below the fraction 10,100,1000,etc. Example = 66/100 = 0, 66. For cases in which the result of the fraction is a whole number, we are in the presence of a fraction non-DECIMAL, example: 80/20 = 4.
