If the division is incomplete, it should be expressed in fractions. It says: quotient is an integer part, decimal part is a remainder as a numerator, divisor as a denominator, and decimal part can be simplified.

For example: 15 ÷ 6 = 2...3

Then, the number written as a fraction is 2 3/6, and the final result after subtracting the decimal part is 2 plus 2 1.