import java.io.*;

class Main{

static final PrintWriter out=new PrintWriter(System.out);

public static void main(String[] args) throws IOException{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
String line="";
while((line=br.readLine())!=null&&!line.isEmpty()){
int res=0;
int num=0;
char c=' ';
for(int i=0;i<line.length();i++){
if(line.charAt(i)=='*'||line.charAt(i)=='+'){
if(c=='*') res+=num;
if(c=='+') res*=num;
if(c==' ') res=num;
c=line.charAt(i);
num=0;
}
else{
num=num*10+(int)(line.charAt(i)-'0');
if(i==line.length()-1){
if(c=='*') res+=num;
if(c=='+') res*=num;
}
}
}
out.println(res);
out.flush();
}
}
}