The remainder is defined in the division of integers, and there are only two situations: divisible and non-divisible. When it is not divisible, it will produce a remainder, so the remainder problem is very important in primary school mathematics.
Remainder operation:
Amodb=c means that the remainder obtained by dividing the integer a by the integer b is C.
The formula for calculating the remainder: c=a-? a/b？ *b
Among them, it is a downward integer operator, and the downward integer operation is called Floor, which is represented by mathematical symbols.
Example:? 3.476? =3,? 6.7546? =6,? -3. 14 159? =-4
For example, 7mod3=7-? 7/3? *3=7-2*3= 1
What is an organization? Division is one of the four operations. Knowing the product of two factors and one of them, the operation of finding the other factor is called division. If ab=c(b≠0), the operation of finding another factor A by multiplying the product C and the factor B is division, written as c/b, and read as C divided by B (or B divided by C). Among them, c is called dividend, b is called divisor, and the result of a operation is called quotient.
The division rule of integers is 1. Starting from the high order of the dividend, first look at how many digits there are in the dividend, and then try to divide the dividend by the first few digits. If it is smaller than the divisor, divide it by one digit as much as possible;
2. Write the quotient except the dividend on the dividend;
3. The remainder after each division operation must be less than the divisor.