#include <QCoreApplication>
#include <iostream>
#include <QVector>

using namespace std;



class Equation
{
    QString MainStr;
public:
    Equation(QString a)
    {
        MainStr = a;
    }
    ~Equation(){}

    QVector<QString> *VecR(QStringList *list)
    {
        QVector <QString> *vec = new QVector<QString>;
        for(int i = 0; i < list->size(); i++)
        {
            vec->push_back(list->at(i));
        }
        return vec;
    }


    void Operation(QVector <QString> *List, int i, int action)
    {
        double arg1 = List->at(i - 2).toDouble();
        double arg2 = List->at(i - 1).toDouble();
        if(action == 1)
            arg1 = arg1 / arg2;
        if(action == 2)
            arg1 = arg1 * arg2;
        List->replace(i, QString::number(arg1));
        List->remove(i-1);
        List->remove(i-2);
    }


    void Act(QVector <QString> *List, int i)
    {
        if(List->at(i) == "/")
        {
            Operation(List, i, 1);
        }
        if(List->at(i) == "*")
        {
            Operation(List, i, 2);
        }




    }

    void Solution()
    {
        QStringList *list = new QStringList;
        *list = MainStr.split(" ");
        QVector <QString> *List = VecR(list);
        bool ok;
        for(int i = 0; i < List->size(); i++)
        {
            if(List->at(i).toDouble(&ok))
                continue;
            else
            {
                Act(List, i);
                i = 0;
            }
        }

        for(int i = 0; i < List->size(); ++i)
        {
            cout << " " <<  List->at(i).toStdString();
        }

    }
};

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    Equation b("6 3 / 3 3 * *");
    b.Solution();




    return a.exec();
}