When an integer is divided by another integer that is not 0, there is a remainder after the quotient of the integer. This division is called division with remainder. The remainder is less than the divisor.

Division operation with remainder.

1 divided by a number that is not equal to zero is equal to the reciprocal of this number.

2. Divide two numbers, the same sign is positive and the different sign is negative, and divide by the absolute value. Divide zero by any number that is not equal to zero to get zero.

note:

Zero can't be a divisor and denominator.

Division and multiplication of rational numbers are reciprocal operations.

In the division operation, according to the law that the same sign is positive and the different sign is negative, the sign is determined first and then divided by the absolute value. If there is a fraction in the formula, it is usually calculated by turning it into a false fraction first. If it is not divisible, all division operations are converted into multiplication operations. ?