operator % method
Euclidean modulo operator.
Returns the remainder of the Euclidean division. The Euclidean division of
two integers a and b yields two integers q and r such that
a == b * q + r and 0 <= r < b.abs().
The sign of the returned value r is always positive.
See remainder for the remainder of the truncating division.
Implementation
BigInt operator %(BigInt other);