using System;

​

public class Program

{

    public static void Main()

    {

        int symbol = Console.Read();

        decimal sum = 0;

        int o = '+';

​

        while (symbol != '=')

        {

            if (symbol == '(')

            {

                decimal innerSum = 0;

                int innerO = '+';

                symbol = Console.Read();

​

                while (symbol != ')')

                {

                    if (0 <= symbol - '0' && symbol - '0' <= 9)

                    {

                        switch (innerO)

                        {

                            case '+':

                                innerSum += symbol - '0';

                                break;

                            case '-':

                                innerSum -= symbol - '0';

                                break;

                            case '*':

                                innerSum *= symbol - '0';

                                break;

                            case '/':

                                innerSum /= symbol - '0';

                                break;

                        }

                    }

                    else if (symbol == '+' ||

                             symbol == '-' ||

                             symbol == '/' ||

                             symbol == '*')

                    {

                        innerO = symbol;

                    }

                    symbol = Console.Read();

                }

​

                switch (o)

                {

                    case '+':

                        sum += innerSum;

                        break;

                    case '-':

                        sum -= innerSum;

                        break;

                    case '*':

                        sum *= innerSum;

                        break;

                    case '/':

                        sum /= innerSum;

                        break;

                }

            }

            else if (0 <= symbol - '0' && symbol - '0' <= 9)

            {

                switch (o)

                {

                    case '+':

                        sum += symbol - '0';

                        break;

                    case '-':

                        sum -= symbol - '0';

                        break;

                    case '*':

                        sum *= symbol - '0';

                        break;

                    case '/':

                        sum /= symbol - '0';

                        break;

                }

            }

            else if (symbol == '+' ||

                     symbol == '-' ||

                     symbol == '/' ||

                     symbol == '*')

            {

                o = symbol;

            }

            symbol = Console.Read();

        }

​

        Console.WriteLine("{0:0.00}", sum);

    }

}