import java.util.Scanner;

public class Calculator2 {
    public static double[] operands;
    public static char[] signs;

    public static boolean isMathSymbol (char symbol) { // Метод для проверки символа на принадлежность к математическим.
        boolean returner = false;
        if (symbol == '*' || symbol == '/' || symbol == '+' || symbol == '-') returner = true;
                return returner;
    }

    public static void main(String[] args) {
        Scanner reader = new Scanner(System.in);

        String input, result = "";
        int counter1, counter2, count = 0, countOfSigns = 0, sign = 0, registrator = 0;
        int[] fixator;
        char collector;

        everything: while (true) {
            input = reader.nextLine();

            for (counter1 = 0; counter1 < input.length(); counter1++) { // Создаем строку без пробелов.
                input = input.replaceAll(" ", "");
            }

            for (counter1 = 0; counter1 < input.length(); counter1++) {
                collector = input.charAt(counter1); // Присваевание символом чекеру.

                if (Character.isDigit(collector)|| isMathSymbol(collector) || collector == '.') {
                    if (isMathSymbol(collector)) {
                        countOfSigns++;
                        signs = new char[countOfSigns];
                        signs[countOfSigns-1] = collector;
                    }
                } else {
                    System.out.println("Ошибка! Вы ввели не число!");
                    break everything;
                }
            }

            for(counter1 = 0; counter1 < input.length(); counter1++) {
                int adder = -1;
                collector = input.charAt(counter1);
                count = counter1;

                if (isMathSymbol(collector)) {
                    fixator = new int[countOfSigns+1];
                    fixator[0] = 0;
                    fixator[registrator+1] = count;
                    registrator++;
                    for(counter2 = fixator[1+adder]; counter2 < count; counter2++) {
                        result += input.charAt(counter2);
                    }
                    operands = new double[countOfSigns+1];
                    operands[sign+1] = Double.parseDouble(result);
                    for(counter1 = 0; counter1 < countOfSigns + 1; counter1++) System.out.println(operands[counter1]);
                }
            }
            System.out.println(operands[countOfSigns]);
        }
    }
}