#include<iostream>
#include <bits/stdc++.h>
using namespace std;
#include<deque>
#define rep(i,a,b) for(LL i = a;i<b; i++)
#define rrep(i,a,b) for(LL i = a;i>b; i--)
#define tobirep(i,a,b,c) for(LL i = a;i<b; i+=c)
#define tobirrep(i,a,b,c) for(LL i = a;i>b; i-=c)
#define INF  2000000000
#define ooki 9,223,372,036,854,775,807
#define tii -9,223,372,036,854,775,808
typedef long long LL;
LL my_pow(LL a,LL b){
  if(b==0){return 1;}
  if(b%2==0){a=a*a; return my_pow(a,b/2);}
  if(b%2==1){return a*my_pow(a,b-1);}
}
int main(){
  LL n;
  cin >> n;
  rep(i,0,n){
    LL d;
    cin >> d;
    cout << my_pow(10,d-1) * 9 << endl;
  }
}