#include<bits/stdc++.h>
#include<cstring>
using namespace std;
int main()
{
    string a,a1;
    int i,len1,len2,total=0,sum=0,total2=0,sum2=0;
    float s;
    while(getline(cin,a) && getline(cin,a1))
    {
        sum=0,sum2=0,total=0,total2=0;

        for(i=0; i<a.size(); i++)
        {
            if(islower(a[i]))
                total+=a[i]-'a'+1;
            else if(isupper(a[i]))
                total+=a[i]-'A'+1;

        }
        while(total!=0)
        {
            sum=sum+total%10;
            total=total/10;
        }
        if(sum>9)
        {
            total=sum;
            while(total!=0)
            {
                sum=0;
                sum=sum+total%10;
                total=total/10;
            }
        }
        for(i=0; i<a1.size(); i++)
        {
            if(islower(a1[i]))
                total2+=a1[i]-'a'+1;
            else if(isupper(a1[i]))
                total2+=a1[i]-'A'+1;

        }
        while(total2!=0)
        {
            sum2=sum2+total2%10;
            total2=total2/10;
        }
        if(sum2>9)
        {
            total2=sum2;
            sum2=0;
            while(total2!=0)
            {
                sum2=sum2+total2%10;
                total2=total2/10;
            }

        }

        if(sum>=sum2)
            s=(double)sum2*100.0/(double)sum;
        else
            s=(double)sum*100.0/(double)sum2;
        printf("%.2lf %%\n",s);

    }
    return 0;
}