What is the divsor in math if you are behind (not me)

A divisor is a number that divides another number. Without a divisor, you cannot divide numbers. In a division, there are four important terms, they are dividend, divisor, quotient, and remainder. The division is the process of making equal groups. The total number of objects to be divided takes the name of a 'Dividend' and the total number of equal groups to be formed is the 'Divisor'. If there are any objects left out without forming a group they are termed as 'Remainder'.

Omg that is a big question and weird words and i’m only 5