#include<bits/stdc++.h>
#include<atcoder/all>
using i64=long long;
using u64=unsigned long long;
using namespace std;
template<u64 mod> using modint=atcoder::static_modint<mod>;

struct primefact{
  int n;
  vector<i64> lpf;
  primefact(int n_):n(n_),lpf(n_+1,-1){
    for(i64 p=2;p<=n;++p){
      if(lpf[p]!=-1){
        continue;
      }
      lpf[p]=p;
      for(i64 q=p;q<=n;q+=p){
        if(lpf[q]==-1){
          lpf[q]=p;
        }
      }
    }
  }
  vector<pair<i64,i64>> operator()(int m){
    vector<i64> v;
    while(m!=1){
      v.emplace_back(lpf[m]);
      m/=lpf[m];
    }
    if(v.size()==0){
      return {};
    }
    vector<pair<i64,i64>> res;
    res.emplace_back(v[0],1);
    for(size_t i=1;i<v.size();++i){
      if(v[i-1]!=v[i]){
        res.emplace_back(v[i],1);
      }
      else{
        res.back().second++;
      }
    }
    return res;
  }
};

int main(){
  constexpr u64 mod=998244353;
  typedef modint<mod> mint;
  primefact pf(300'001);
  int N;
  cin>>N;
  vector<i64> A(N),B(N);
  vector<vector<pair<i64,i64>>> idx(300'001);
  vector<i64> m(300'001);
  mint sm=0;
  for(int i=0;i<N;++i){
    cin>>A[i]>>B[i];
    sm+=mint(A[i])/B[i];
    auto tmp=pf(B[i]);
    for(auto [p,e]:tmp){
      idx[p].emplace_back(i,e);
      m[p]=max(m[p],e);
    }
  }
  mint d=1;
  for(i64 p=2;p<=300'001;++p){
    if(m[p]==0){
      continue;
    }
    vector<i64> pw(21,1);
    for(int i=1;i<=20;++i){
      pw[i]=pw[i-1]*p;
    }
    i64 sm=0;
    for(auto [i,e]:idx[p]){
      sm+=A[i]*pw[m[p]-e]*atcoder::inv_mod(B[i]/pw[e],pw[m[p]]);
      sm%=pw[m[p]];
    }
    i64 prd=pw[m[p]];
    for(int i=0;i<m[p];++i){
      if(sm%p==0){
        sm/=p;
        prd/=p;
      }
      else{
        break;
      }
    }
    d*=prd;
  }
  cout<<(sm*d).val()<<" "<<d.val()<<endl;
}