#include <iostream>
#include <string>
#include <sstream>

using namespace std;

template <typename Iterator> string F1(Iterator begin, Iterator end)
{
 Iterator i,i1;
 float a;
 if ((i = find(begin,end,'(')) != end) {
 return F1(i+1,end);

 }else if ((i = find(begin,end,')')) != end) {
        a = F(begin,i);
        ostringstream ss;
        ss << a;
        string str = ss.str();
        i1 = erase(begin,i);

        insert(i1,str.begin(),str.end());
        return str;
  }
 }
 
 


template <typename Iterator> float F(Iterator begin, Iterator end)
{     
 Iterator i;
 if ((i = find(begin,end,'+')) != end) {
 return F(begin,i) + F(i+1,end) ;
 }else if ((i = find(begin,end,'-')) != end) {
 return F(begin,i) - F(i+1,end) ;
 }else if ((i = find(begin,end,'*')) != end) {
 return F(begin,i) * F(i+1,end) ;
 }else if ((i = find(begin,end,'/')) != end) {
 return F(begin,i) / F(i+1,end) ;  
 }else { string str1(begin,end) ;
               istringstream stream(str1);
               float i;
               stream >> i;
               return  i ;
               
      }
}

int main() 
{
    string str,str1;
    float a;
    getline(cin,str);
    str1 = F1(str.begin(),str.end());
    //a = F(str.begin(),str.end());
    cout << "Ats: " << a << endl;
    cin.get();
}