#pragma comment(linker, "/STACK:1024000000,1024000000")

#include<cstdio>

#include<cstring>

#include<cmath>

#include<algorithm>

#include<vector>

#include<map>

#include<set>

#include<queue>

#include<stack>

#include<iostream>

using namespace std;

typedef long long LL;

const double pi=acos(-1.0),eps=1e-;

void File()

{

    freopen("D:\\in.txt","r",stdin);

    freopen("D:\\out.txt","w",stdout);

}

inline int read()

{

    char c = getchar(); while(!isdigit(c)) c = getchar(); int x = ;

    while(isdigit(c)) { x = x *  + c - ''; c = getchar();  }

    return x;

}

LL n,m;

LL gcd(LL a,LL b){ if(b==)return a; return gcd(b,a%b); }

int main()

{

    while(~scanf("%lld%lld",&n,&m))

    {

        if(n==&&m==) break;

        LL x1=n*(m-),x2=m*m ;

        LL GCD=gcd(x1,x2);

        if(x1==) printf("0/1\n");

        else printf("%lld/%lld\n",x1/GCD,x2/GCD);

    }

    return ;

}