remainder

Something left over after other parts have been taken away.

The number left over when one integer is divided by another.

The number obtained when one number is subtracted from another; the difference.

An estate in property that takes effect after the expiration of another estate, as where one party is given the right to occupy a property for that party's lifetime, and then another party is given the same right after the first party's death.

A book that remains with a publisher after sales have fallen off, usually sold at a reduced price.