// 數學算式之求解。
import java.io.*;
public class a06 {
        public static void main(String args[]) throws Exception
        {  //程式進入點
           String getbr;
           int sum; //計算和
           int pud; //計算乘積
           int i;
           char now; //作為取得的字元資料暫存區
           BufferedReader br= new BufferedReader(new InputStreamReader(System.in));
           while (true)
           {
                sum=0;
                pud=0;
                do
                {
                        System.out.print("請輸入運算式：");
                        getbr = br.readLine();
                } while (getbr.length()>15 || getbr.length()==0);
                if (getbr.equals("0"))
                {
                        System.out.println("結束！");
                        break;
                }
                for (i=0;i<getbr.length();i=i+1)
                {
                        now=getbr.charAt(i);
                        if (now=='+') //ADD
                        {
                                sum=sum+pud;
                                pud=0;
                        }
                        else if (now=='*') //mul
                        {
                                continue; //沒事
                        }
                        else //數字
                        {
                                now=(char) (now - '0'); //算出數字值
                                if (pud==0) pud= now;
                                else pud=pud*now;
                        }
                }
                /*****最後的pud不會被處理到*****/
                sum=sum+pud;
                System.out.println("答案是："+sum);
        }
    }//while(true)
}