#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define ALL(v) v.begin(),v.end()
typedef long long ll;
 
#include<bits/stdc++.h>
using namespace std;

const int MOD=1e9+7;
 
int main(){
  ios::sync_with_stdio(false);
  std::cin.tie(nullptr);
  
  ll p,k;
  cin>>p>>k;
  ll tmp=10;
  ll ans=0;
  rep(i,p-1){
    ans=ans*10%MOD;
    ans=(ans+tmp/p)%MOD;
    tmp-=tmp/p*p;
    tmp*=10;
  }
  if(k) cout<<ans<<endl;
  else cout<<(ans+1)%MOD<<endl;
  
  return 0;
}