#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define Int long long
#define MAX_N 1000009

double dp[MAX_N];
double calc(int K) {
  double A[6] = {1, 2, 3, 1, 3, 2};
  rep(i, 6) { A[i] /= 12; }
  fill(dp, dp + MAX_N, 0);
  for (int i = K - 1; i >= 0; i--) {
    for (int j = 0; j <= 5; j++) {
      dp[i] += (dp[i + j + 1] + 1.0) * A[j];
    }
  }
  return dp[0];
}

void solve() {
  double S[6] = {
      1.0000000000000000, 1.0833333333333333, 1.2569444444444444,
      1.5353009259259260, 1.6915991512345676, 2.0513639724794235,
  };
  double A[6];
  rep(i, 5) {
    A[i] = S[i + 1] - 1.0;
    for (int k = 0; k < i; k++) {
      A[i] -= S[i - k] * A[k];
    }
  }
  A[5] = 1.0 - accumulate(A, A + 5, 0.0);
  rep(i, 6) { cout << i << " " << A[i] << endl; }
}

int main() {
  // solve();
  int N;
  cin >> N;
  vector<int> A(N);
  rep(i, N) { cin >> A[i]; }
  rep(i, N) { cout << fixed << setprecision(10) << calc(A[i]) << endl; }
}