#include "bits/stdc++.h"
using namespace std;
#define ll long long
#define endl '\n'
#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define rep2(i,a,b) for(int i=int(a);i<int(b);i++)
#define pb emplace_back
#define all(x) (x).begin(),(x).end()
int mod=1e9+7;
int mod2=998244353;
const int INF=1e9;

signed main(){
	string s;
	while(1){
		cin>>s;
		if(s=="#")break;
		
		ll ansb=-1;
		ll anss=0;
		ll np=0;
		reverse(all(s));
		while(np<s.size()){
			if(s[np]=='h'){
				if(ansb==-1){
					ansb=1;
					anss=0;
				}else{
					ansb*=2;
					anss*=2;
					if(anss!=0){
						anss-=90;
					}
				}
				np+=5;
			}else{
				if(ansb==-1){
					ansb=1;
					anss=90;
				}else{
					ansb*=2;
					anss*=2;
					if(anss/ansb!=90){
						anss+=90;
					}
				}
				np+=4;
			}
		}
		if(anss>0)while(anss%2==0&&ansb>=2){
			anss/=2;
			ansb/=2;
		}
		if(ansb==1)cout<<anss<<endl;
		else cout<<anss<<"/"<<ansb<<endl;
	}
}

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