Divide and rule, with China characteristics. I have seen this requirement diluted before, but I can't remember the specific content. I'm afraid it's impossible to cancel for the time being. After all, it has been used for so many years, especially for teachers who like to make things difficult for students. Extracurricular auxiliary topics abound. I want to change the relationship between teachers into a first-come-first-served relationship, but I can't do it yet. Division is one of the four operations. Given the product of two factors and a non-zero factor, the operation of finding another factor is called division. Division of two numbers is also called the ratio of two numbers. If ab=c(b≠0), the operation of finding another factor A by multiplying the product C and the factor B is division, which is marked as c÷b and pronounced 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. Long division, commonly known as "long division", is suitable for integer division, decimal division, polynomial division (that is, factorization) and other divisions that pay more attention to the calculation process and quotient, and both multiplication and subtraction are used in the process. According to the multiplication table, two integers can be calculated by long division (direct division). If the dividend has a decimal part (or decimal point), just bring the decimal point down when calculating; If the divisor has a decimal point, move the decimal points of the divisor and the dividend at the same time until the divisor has no decimal point. An abacus can also do division.

Legal basis: Article 11 of the Compulsory Education Law of People's Republic of China (PRC) stipulates that all children over the age of six shall be sent to school by their parents or other legal guardians to receive and complete compulsory education; Children in areas where conditions are not available can be postponed to seven years of age. School-age children and adolescents who need to postpone or drop out of school due to their physical condition shall apply to their parents or other legal guardians, and be approved by the education administrative department of the local township people's government or the county-level people's government.