[C++] Pounds Shillings Pennies

#include <iostream>
using namespace std;

int main()
{
        int pences,shillings=0,pounds=0, original;
        do{
                cout<<"How many pences:";
                cin>>pences;//input pences
        }while(pences<0||pences>10000);//verify range
        original=pences;// set an original value for last output
        while(pences/240.0>=1)//while pences is divisible by 240, increment pounds
        {
                pounds++;
                pences-=240;//subtract that which has been turned into a pound
        }
        while(pences/12.0>=1)//while pences is divisible by 12, increment shillings
        {
                shillings++;
                pences-=12;//subtract that which has been turned into a shilling
        }
        cout<<"In "<<original<<" pences you will find "<<pounds<<" pounds "<<shillings<<" shillings and "<<pences<<" pennies"<<endl;//output original pences in pounds shillings and pennies, what is leftover of the variable cannot make a full shilling hence it is in pennies
        system("pause");
        return 0;
}