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.
the remainder
The remainder.
That is usually called the "remainder".
We call this left over number the remainder.
The amount left over after a division is the Remainder.
The number left over in a division problem is called the "remainder".
The remainder.
The remainder.
The numbers left over from dividing a number are called the "remainder".
the remainder
It is called "the remainder"
The remainder.
That is usually called the "remainder".
When a number cannot be divided evenly, the amount left over is called the remainder. For example, in the division of 7 by 3, the quotient is 2, and the remainder is 1, since 3 goes into 7 two times with 1 left over. The remainder is an important concept in arithmetic and number theory, particularly in modular arithmetic.
We call this left over number the remainder.
It is called " junk"
The number 4 is called a remainder