the BigInt to divide
the BigInt to divide the dividend by
is set to the result of the division
is set to the remainder of the division
auto a = BigInt(123); auto b = BigInt(25); BigInt q, r; divMod(a, b, q, r); assert(q == 4); assert(r == 23); assert(q * b + r == a);
Finds the quotient and remainder for the given dividend and divisor in one operation.