remainder
The number left over in a division problem is called the "remainder".
its the number left over
quotient
remainder
The left over number or numbers
top
the remainder
The amount left over after a division is the Remainder.
remainder
a number that is left after division has been completed.
The name of an answer when dividing is called the "quotient." In a division operation, the dividend is the number being divided, the divisor is the number by which the dividend is divided, and the quotient is the result of that division.
Your question isn't fully clear, but if you are referring to the process of division of numbers, the "number left over" is called a remainder.