#include <algorithm>
#include <iostream>
#include <numeric>
#include <string>
#include <tuple>
#include <utility>
#include <vector>
#include <limits>

#define rep(i, a, b) for (int i = int(a); i < int(b); i++)
using namespace std;
using ll = long long int;  // NOLINT
using P = pair<ll, ll>;

// clang-format off
#ifdef _DEBUG_
#define dump(...) do{ cerr << __LINE__ << ":\t" << #__VA_ARGS__ << " = "; debug_print(__VA_ARGS__); } while(false)
template<typename T, typename... Ts> void debug_print(const T &t, const Ts &...ts) { cerr << t; ((cerr << ", " << ts), ...); cerr << endl; }
#else
#define dump(...) do{ } while(false)
#endif
template<typename T> vector<T> make_v(size_t a, T b) { return vector<T>(a, b); }
template<typename... Ts> auto make_v(size_t a, Ts... ts) { return vector<decltype(make_v(ts...))>(a, make_v(ts...)); }
template<typename T> bool chmin(T &a, const T& b) { if (a > b) {a = b; return true; } return false; }
template<typename T> bool chmax(T &a, const T& b) { if (a < b) {a = b; return true; } return false; }
template<typename T, typename... Ts> void print(const T& t, const Ts&... ts) { cout << t; ((cout << ' ' << ts), ...); cout << '\n'; }
template<typename... Ts> void input(Ts&... ts) { (cin >> ... >> ts); }
template<typename T> istream &operator,(istream &in, T &t) { return in >> t; }
struct Inf { template<typename T> constexpr operator T() { return numeric_limits<T>::max() / 2; } };
// clang-format on

#include <iomanip>

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    // p1 = 1/12, p2 = 1/6, p3 = 1/4, p4 = 1/12, p5 = 1/4, p6 = 1/6
    constexpr double rp[6] = {12, 6, 4, 12, 4, 6};
    const int nmax = 1000000, diff = 10;
    vector<double> dp(nmax + diff, 0.0);
    for (int i = nmax; i >= 0; i--) {
        rep(j, 0, 6) {
            dp[i] += dp[i + j + 1] / rp[j];
        }
        dp[i] += 1;
    }

    int t;
    cin, t;
    rep(i, 0, t) {
        int n;
        cin, n;
        cout << fixed << setprecision(15) << dp[nmax - n + 1] << endl;
    }
    return 0;
}