return l.elem() * r.elem();
typedef typename BinaryReturn<RScalar<T1>, RComplex<T2>, OpMultiply>::Type_t  Ret_t;  return Ret_t(l.elem()*r.real(), l.elem()*r.imag());
operator*(const RScalar<T1>& l, const RScalar<T2>& r){  return l.elem() * r.elem();}