a, b = map(int, input().split())
a *= 10 ** 50
a //= b
a = str(a)
if len(a) >= 51:
    ans = a[:-50] + "." + a[-50:]
    print(ans)
else:
    zero = 50 - len(a)
    ans = "0." + "0" * zero + a
    print(ans)