# -*- coding: utf-8 -*-

import sys
import copy

sys.setrecursionlimit(1000000)

# input = sys.stdin.readline
from collections import defaultdict
from decimal import *

# ~~~~~~~~~~~~~~~~~~~~~_(＾～＾ ｣ ∠)_~~~~~~~~~~~~~~~~~~~~~

A, B = map(float, input().split())

getcontext().prec = 55

A = Decimal(str(A))
B = Decimal(str(B))

s = str("{:.51f}".format(A / B))
print(s[:-1])