#include <cstdio>  
#include <cstdlib>  
#include <cstring>  
#include <iostream>  
#include <cmath>  
#include <algorithm>  
using namespace std;  
int main()  
{  
	freopen("computer.in","r",stdin);
	freopen("computer.out","w",stdout);
    char s[1200];  
    scanf("%s",&s);  
    int l=strlen(s);  
    int i=0,t=0,k=0,x=0,y=0;  
    char c;  
    while (i<l)  
    {  
        if (s[i]=='=')   
        {  
            i++;  
            t=1;  
        }  
        if (s[i]=='-')  
        {  
            i++;  
            k=1;  
        }  
        if (s[i]=='+') i++;  
        int f=0;  
        while (s[i]>='0' && s[i]<='9')  
            f=f*10+s[i++]-'0';  
        if (s[i]>='a' && s[i]<='z')  
        {  
            c=s[i++];  
            if ( (k+t)%2 ==0 ) x+=f;  
            else x-=f;  
            k=0;  
        }  
        else  
        {  
            if ( (k+t)%2 ==0 ) y-=f;  
            else y+=f;  
            k=0;  
        }  
    }  
    double ans=y*1.000/x;  
    printf("%c=%.3lf\n",c,ans);  
    fclose(stdin);fclose(stdout);
    return 0;  
}