#include <bits/stdc++.h>

using namespace std;

#define REP(i,a,b) for(int i=a;i<(int)b;i++)
#define rep(i,n) REP(i,0,n)

double base[6] = {1.0/12, 2.0/12, 3.0/12, 1.0/12, 3.0/12, 2.0/12};


double dp[1000010];

int main() {
  
  rep(i, 1000001) {
    dp[i] = 1.;
    REP(j, 1, 7) if(i-j >= 0) { dp[i] += dp[i-j] * base[j-1]; }
  }
  int T; cin >> T;
  while(T--) {
    int N; cin >> N;
    printf("%.15f\n", dp[N]);
  }
  
  return 0;
}