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

namespace ConsoleApp1
{

    class Program
    {
        static void Main(string[] args)
        {

            var lengthInMeters = int.Parse(Console.ReadLine());
            double widthInCm = double.Parse(Console.ReadLine());

            lengthInMeters *= 100;

            double percent = lengthInMeters % widthInCm;

            double result = 0;

            if (widthInCm == 0)
            {
                result = lengthInMeters * widthInCm;
                Console.WriteLine($"{result:F2}");
            }
            else
            {
                if (percent != 0)
                {
                    result = (lengthInMeters / widthInCm) * 100;
                    Console.WriteLine($"{result:F2}%");
                }
                else
                {
                    result = lengthInMeters * widthInCm;
                    Console.WriteLine($"{result:F2}");
                }

            }
        }
    }
}