Класс Money, перегрузка арифметических операций для работы с денежным форматом

//Ñîçäàéòå êëàññ Money, â êîòîðîì ïåðåãðóçèòå àðèôìåòè÷åñêèå
//îïåðàöèè  äëÿ  ðàáîòû    ñ äåíåæíûì ôîðìàòîì. Ïåðåãðóçèòå äâà îïåðàòîðà
//ñëåäóþùèì îáðàçîì:
//double * Money      //óìíîæèòü ÷èñëî íà äåíüãè
//double / Money      //äåëèòü ÷èñëî íà äåíüãè
//Ýòè    îïåðàöèè   òðåáóþò   íàëè÷èÿ äðóæåñòâåííûõ  ôóíêöèé, òàê êàê ñïðàâà îò îïåðàòîðà
//íàõîäèòñÿ    îáúåêò,   à ñëåâà -   îáû÷íî ÷èñëî.    Óáåäèòåñü,   ÷òî main()
//ïîçâîëÿåò  ïîëüçîâàòåëþ  ââåñòè   äâå   äåíåæíûå  ñòðîêè  è ÷èñëî  ñ ïëàâàþùåé
//çàïÿòîé, à  çàòåì   êîððåêòíî   âûïîëíèòü  âñå  ñåìü  àðèôìåòè÷åñêèõ äåéñòâèé ñ
//ñîîòâåòñòâóþùèìè ïàðàìè çíà÷åíèé.
 
#include <stdio>
#include <conio>
#include <iostream>
#include <windows.h>
 
using namespace std;
class oper
{
private:
double a,b,summ;
public:
double summa(double, double) ;
//double raznica(double, double);
double umnozhenie(double, double);
//double delenie();
//double delenieNa();
//double umnozhenieNa();
};
double oper::summa(double a,double b)
{
double summ=a+b;
cout<<summ;
}
double oper::umnozhenie(double w, double e)
{double sum=w*e;
cout<<sum;
}
 
void main()
{
double q,w,e;
cin>>q;cin>>w;cin>>e ;
oper a;
 
a.summa(q,w);
a.umnozhenie(q,w);
system("PAUSE");
getch();
}

#include <iostream>
 
class Money {
 private:
  double amount;
 public:
  Money() : amount(0.0) {}
  explicit Money(double amount) : amount(amount) {}
  double getAmount() const { return amount; }
  void setAmount(double amount) { this->amount = amount; }
};
 
Money operator*(const Money &money, double multiplier) {
  return Money(money.getAmount() * multiplier);
}
 
Money operator*(double multiplier, const Money &money) {
  return money * multiplier;
}
 
Money operator/(const Money &money, double multiplier) {
  return Money(money.getAmount() / multiplier);
}
 
std::ostream &operator<<(std::ostream &stream, const Money &money) {
  return stream << money.getAmount() << "$";
}
 
int main(int argc, char *argv[]) {
  setlocale(LC_ALL,"rus");
  srand(time(0));
 
  Money x(200.3);
  
  std::cout << x << std::endl <<
    x * 2 << std::endl <<
    x / 2 << std::endl <<
    2 * x << std::endl;
  
  std::cin.get();
  return EXIT_SUCCESS;
}