MAX = 1000005
dp = [0.0] * MAX
p = [1 / 12, 2 / 12, 3 / 12, 1 / 12, 3 / 12, 2/ 12]

for i in range(1, MAX):
   for j in range(1, (min(6, i - 1)) + 1):
      dp[i] += dp[i - j] * p[j - 1]
   dp[i] += 1
   
T = int(input())
for i in range(T):
   N = int(input())
   print(dp[N])