#include <iostream>
#include <string>
#include <sstream>
#include <algorithm>
 
using namespace std;
 
template <typename Iterator> void F1(string & str, Iterator begin, Iterator end)
{
         float f;
         Iterator i = begin, begin1,i1;
         int count=0;
         while(i!=end)
         {
                if(*i == '(') {++count; begin1 = i; ++i; }
                else if (*i == ')')
                {
                    --count;
                    if(count == 0) { F1(str,begin1+1, i-1); }
                    else ++i;
                }
                else  { 
                        f=F(begin,end);
                        ostringstream ss;
                        ss << f ;
                        string s = ss.str();
                        i1=str.erase(begin,end);
                        str.insert(i1,s.begin(),s.end());
                        F1(str,str.begin(),str.end());
                       }
         }
                        
}
 
 
 
 
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);
    str = F1(str,str.begin(),str.end());
    //a = F(str.begin(),str.end());
    cout << "Ats: " << a << endl;
    cin.get();
}