a = [0.0]*5+[1.0]
b = [0.0]*6
for _ in range(999):
    a.append((sum(a[-6:]))/6)
    b.append((sum(b[-6:]))/6 + 1)

T = int(input())
for _ in range(T):
    N = int(input())
    if N < 994: print(b[N+5]/a[N+5])
    else: print(b[999]*7/2+N-994)