Multiplication is a shortcut to add up the same numbers. The result of its operation is called product, and "X" is the symbol of multiplication. From the philosophical point of view, multiplication is the result of qualitative change caused by additive quantity. The multiplication of integers (including negative numbers), rational numbers (fractions) and real numbers is a systematic summary of this basic definition.
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Division was first used in Varis, England, and later popularized in England. The original meaning of division is division, and the horizontal line in the middle of the division symbol separates the upper and lower parts, which vividly represents "division" At this point, the four major combat symbols have been completed, which is far from being widely adopted by various countries.
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. Division of two numbers is also called the ratio of two numbers. If ab is equal to c(b is not equal to 0), the operation of finding another factor A by the product of C and factor B is division. Write c divided by b and read c divided by b (or b divided by c). C is called dividend, B is called divisor, and the result of operation A is called quotient.