operator/

template<class T>
    complex<T> operator/(const complex<T>& lhs, const complex<T>& rhs);
template<class T>
    complex<T> operator/(const complex<T>& lhs, const T& rhs);
template<class T>
    complex<T> operator/(const T& lhs, const complex<T>& rhs);

The operators each convert both operands to the return type, then return the complex quotient of the converted lhs and rhs.