using System;
using System.Collections.Generic;
class Enigmanation
{
    private static string[] FindElements(string input)
    {
        //FindElements returns a string array with all elements (a.k.a signs or numbers). if there are any brackets they become 1 element (number)
        List<string> outputList = new List<string>();
        for (int i = 0; i < input.Length; i++)
        {
            // if there is a sign it becomes a new element in the outputList
            if ((char)input[i] == '+' || (char)input[i] == '-' || (char)input[i] == '*' || (char)input[i] == '/' || (char)input[i] == '%')
            {
                outputList.Add(Convert.ToString(input[i]));
            }
            // if there is a number it becomes a new element in the outputList
            if ((int)input[i] >= 48 && (int)input[i] <= 57)
            {
                outputList.Add(Convert.ToString(input[i]));
            }
            // if there is an opening bracket it finds its closing bracket and uses the FindElements and DoMath funcion to find the result in the brackets -> then the value becomes a new element in the outputList
            if ((char)input[i] == '(')
            {
                for (int j = i; j < input.Length; j++)
                {
                    if ((char)input[j] == ')')
                    {
                        string[] newInput = FindElements(input.Substring(i + 1, j - i + 1));
                        outputList.Add(DoMath(newInput));
                        // the loop should continiue from the closing bracket, so i = j
                        i = j;
                        break;
                    }
                }
            }
            if ((char)input[i] == '=')
            {
                outputList.Add(Convert.ToString(input[i]));
                break;
            }
        }
        // returns the string array with elements
        return outputList.ToArray();
    }
    private static string DoMath(string[] input)
    {
        // DoMath finds the value of the given string array
        List<double> numberElements = new List<double>();
        List<double> bigElements = new List<double>();
        List<char> signs = new List<char>();
        for (int i = 0; i < input.Length; i++)
        {
            if ((int)input[i][0] >= 48 && (int)input[i][0] <= 57)
            {
                numberElements.Add(Convert.ToDouble(input[i]));
            }
        }
        bool isThereSecondarySign = false;
        double result = numberElements[0];
        int counter = 1;
        for (int i = 0; i < input.Length; i++)
        {
            if ((char)input[i][0] == '*')
            {
                result = result * numberElements[counter];
                counter++;
            }
            if ((char)input[i][0] == '/')
            {
                result = result / numberElements[counter];
                counter++;
            }
            if ((char)input[i][0] == '%')
            {
                result = result % numberElements[counter];
                counter++;
            }
            if ((char)input[i][0] == '-' || (char)input[i][0] == '+')
            {
                bigElements.Add(result);
                result = numberElements[counter];
                counter++;
                isThereSecondarySign = true;
            }
            if ((char)input[i][0] == '=' || (char)input[i][0] == ')')
            {
                bigElements.Add(result);
                result = bigElements[0];
            }
        }
        counter = 1;
        for (int i = 0; i < input.Length; i++)
        {
            if ((char)input[i][0] == '-')
            {
                result = result - bigElements[counter];
                counter++;
            }
            if ((char)input[i][0] == '+')
            {
                result = result + bigElements[counter];
                counter++;
            }
        }
        return result.ToString();
    }
    static void Main()
    {
        string input = Console.ReadLine();
        Console.WriteLine("{0:F3}", Convert.ToDouble(DoMath(FindElements(input))));
    }
}