#include<bits/stdc++.h>
#define INF 0x3f3f3f3f3f3f3f3f
#define mod 1000000007
#define IOS ios::sync_with_stdio(false)
#define endl '\n'
using namespace std;
typedef long long ll;
const int maxn = 1e5 + 10;
stack<double>stk;
int main() {
  IOS;
  double a, b;
  char c, str[10];
  int i = 0;
  scanf("%c", &c);
  while (c != '#') {
    while (isdigit(c) || c == '.') {
      str[i++] = c;
      str[i] = '\0';
      scanf("%c", &c);
      if (c == ' ') {
        a = atof(str);
        stk.push(a);
        i = 0;
        break;
      }
    }
    switch (c) {
    case '+': {
      a = stk.top();
      stk.pop();
      b = stk.top();
      stk.pop();
      stk.push(a + b);
      break;
    }
    case'-': {
      a = stk.top();
      stk.pop();
      b = stk.top();
      stk.pop();
      stk.push(b - a);
      break;
    }
    case'*': {
      a = stk.top();
      stk.pop();
      b = stk.top();
      stk.pop();
      stk.push(a * b);
      break;
    }
    case'/': {
      a = stk.top();
      stk.pop();
      b = stk.top();
      stk.pop();
      if (a == 0) {
        printf("Error!除数不能为0");
        return -1;
      }
      stk.push(b / a);
      break;
    }
    }
    scanf("%c", &c);
  }
  printf("%llf", stk.top());
  return 0;
}

#include<bits/stdc++.h>
#define INF 0x3f3f3f3f3f3f3f3f
#define mod 1000000007
#define IOS ios::sync_with_stdio(false)
#define endl '\n'
using namespace std;
typedef long long ll;
const int maxn = 1e5 + 10;
stack<char>s;
string ss;
int getnum(int& i,bool negtive) {
  int ans = 0;
  while (ss[i]>='0' && ss[i]<='9') {
    ans = ans * 10 + ss[i] - '0';
    ++i;
  }
  if (negtive)ans = -ans;
  return ans;
}
int main() {
  char c;
  char temp;
  getline(cin, ss);
  int i;
  for (i = 0;i < ss.size();++i) {
    while (isdigit(ss[i])) {
      printf("%c", ss[i]);
      ++i;
      if (ss[i]<'0' || ss[i]>'9') {
        printf(" ");
        break;
      }
    }
    if (ss[i] == ')') {
      do {
        temp = s.top();
        s.pop();
        if (temp != '(')printf("%c ", temp);
      } while (temp != '(');
    }
    else if (ss[i] == '+' || ss[i] == '-') {
      if (s.empty())s.push(ss[i]);
      else {
        do {
          temp = s.top();
          s.pop();
          if (temp == '(')s.push(temp);
          else {
            printf("%c ", temp);
          }
        } while (!s.empty() && temp != '(');
        s.push(ss[i]);
      }
    }
    else if (ss[i] == '*' || ss[i] == '/' || ss[i] == '(')s.push(ss[i]);
  }
  while (!s.empty()) {
    temp = s.top();
    s.pop();
    printf("%c ", temp);
  }
  return 0;
}