Problem:
Score : 100 points

Problem Statement

In order to pass the entrance examination tomorrow, Taro has to study for T more hours.

Fortunately, he can leap to World B where time passes X times as fast as it does in our world (World A).

While (X \times t) hours pass in World B, t hours pass in World A.

How many hours will pass in World A while Taro studies for T hours in World B?

Constraints

All values in input are integers.

1 \leq T \leq 100

1 \leq X \leq 100

Input

Input is given from Standard Input in the following format:

T X

Output

Print the number of hours that will pass in World A.

The output will be regarded as correct when its absolute or relative error from the judge's output is at most 10^{-3}.

Sample Input 1

8 3

Sample Output 1

2.6666666667

While Taro studies for eight hours in World B where time passes three times as fast, 2.6666... hours will pass in World A.

Note that an absolute or relative error of at most 10^{-3} is allowed.

Sample Input 2

99 1

Sample Output 2

99.0000000000

Sample Input 3

1 100

Sample Output 3

0.0100000000

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace book
{
    //6章
    //再帰・分割統治法
    //ALDS1_4_D(Allocation)
    /*class Program
    {
        static void Main()
        {
            long[] input = Console.ReadLine().Split().Select(long.Parse).ToArray();
            long n = input[0];
            long k = input[1];
            List<long> weight = new List<long>();
            for (long i =0; i<n;i++)
            {
                weight.Add(long.Parse(Console.ReadLine()));
            }
        }
        static void solve()
        {
            long left = 0;
            long right = 10000000000;
            long mid = 0;
            while (right - left > 1)
            {
                mid = (right + left) / 2;
                
            }
        }
        static int check(long P,int n)
        {
            int i = 0;
            for (int j =0;j<;j++)
            {

            }
        }
    }*/
    //113C-ID
    /*class Program
    {
        static void Main()
        {
            long[] cin = Console.ReadLine().Split().Select(long.Parse).ToArray();
            long N = cin[0];
            long M = cin[1];
            List<Data> list = new List<Data>();
            for (int i = 0; i< M;i++)
            {
                Data data = new Data();
                var temp = Console.ReadLine().Split().Select(long.Parse).ToArray();
                data.ID = i;
                data.pref = temp[0];
                data.year = temp[1];
                list.Add(data);
            }
            var sortedlist = list.OrderBy(n => n.pref).OrderBy(m => m.year).ToList();
            var ans = rep(sortedlist);
            ans = ans.OrderBy(n => n.ID).ToList();
            foreach (Data m in ans)
            {
                Console.Write("{0:D6}",m.pref);
                Console.WriteLine("{0:D6}", m.year);
            }
        }
        static List<Data> rep(List<Data> sortlist)
        {
            long rank = sortlist.First().pref;
            var a = 1;
            foreach (Data list in sortlist)
            {
                if (list.pref == rank)
                {
                    list.year = a;
                    a++;
                }
                else
                {
                    a = 1;
                    rank++;
                    list.year = a;
                    a++;
                }
            }
            return sortlist;
        }
    }
    class Data
    {
        public long ID { get; set; }
        public long pref { get; set; }
        public long year { get; set; }
    }
    /*4 10
    3 254
    1 316
    2 43
    2 91
    2 3535
    3 2018
    4 112
    1 1
    2 53
    4 5235*/
    //129A-AirPlane
    /*class Program
    {
        static void Main()
        {
            int[] input = Console.ReadLine().Split().Select(int.Parse).ToArray();
            List<int> Answer = new List<int>();
            var a = input[0] + input[1];
            var b = input[1] + input[2];
            var c = input[2] + input[0];
            Answer.Add(a);
            Answer.Add(b);
            Answer.Add(c);
            Console.WriteLine(Answer.Min());
        }
    }*/
    //119C-TBD
    /*class Program
    {
        static void Main()
        {
            string Day = Console.ReadLine();
            string a = Day.Replace("/","");
            string th = "20190430";
            int result = a.CompareTo(th);
            if (result == 1)
            {
                Console.WriteLine("TBD");
            }
            else 
            {
                Console.WriteLine("Heisei");
            }
        }
    }*/
    //117A-EntranceExamination
    class Program
    {
        static void Main()
        {
            double[] a = Console.ReadLine().Split().Select(double.Parse).ToArray();
            double b = a[0];
            double c = a[1];
            Console.WriteLine(b/c);
        }
    }
}