import java.io.*;
import java.util.regex.*;
import java.util.*;
public class RPN{
public static void main(String[] args) throws IOException{
System.out.println("You can use \"1~9.()+-*/\"\nWrite negative numbers between \"()\"");
BufferedReader read=new BufferedReader(new InputStreamReader(System.in));
String form=read.readLine();
System.out.println("="+rp(form));
System.out.println("="+String.valueOf(rpcal(rp(form))));
}
static String rp(String form){
form="("+form+")";
Pattern mi=Pattern.compile("\\((-\\d+\\.?\\d*)\\)");
Matcher mat=mi.matcher(form);
while(mat.find()){
form=form.substring(0,mat.start())+"["+mat.group(1)+"]"+form.substring(mat.end());
mat=mi.matcher(form);
}
Pattern tocha=Pattern.compile("[^\\[0-9](\\d+\\.?\\d*)[^\\]0-9]");
mat=tocha.matcher(form);
while(mat.find()){
form=form.substring(0,mat.start(1))+"["+mat.group(1)+"]"+form.substring(mat.end(1));
mat=tocha.matcher(form);
}
form=form.substring(1,form.length()-1);
boolean stop=false;
int kaknow=0;
char[] formc=form.toCharArray();
StringBuilder ret=new StringBuilder(formc.length),kakst=new StringBuilder(formc.length);
Deque<Character> sta=new ArrayDeque<>();
for(char c:formc){
if(!stop){
switch(c){
case '+':
case '-':
if(ret.toString().charAt(ret.length()-1)=='['){
ret.append(c);
break;
}
if(!sta.isEmpty()){if(sta.getFirst()=='+'||sta.getFirst()=='-')ret.append(sta.removeFirst());}
while(!sta.isEmpty()){
if(sta.getFirst()=='*'||sta.getFirst()=='/')ret.append(sta.removeFirst());
else break;
}
sta.addFirst(c);
break;
case '*':
case '/':
if(!sta.isEmpty()){if(sta.getFirst()=='*'||sta.getFirst()=='/')ret.append(sta.removeFirst());}
sta.addFirst(c);
break;
case '(':
stop=true;
kaknow=1;
break;
default:
ret.append(c);
break;
}
}else{
switch(c){
case '(':
kaknow++;
kakst.append(c);
break;
case ')':
kaknow--;
if(kaknow==0){
String kakret=rp(kakst.toString());
ret.append(kakret);
stop=false;
}else kakst.append(c);
break;
default:
kakst.append(c);
break;
}
}
}
while(!sta.isEmpty())ret.append(sta.removeFirst());
form=ret.toString();
return form;
}
static Double rpcal(String form){
char[] formc=form.toCharArray();
double ret,val,valf,vall;
String keep="";
Deque<String> sta=new ArrayDeque<>();
for(char c:formc){
switch(c){
case '[':
keep="[";
break;
case ']':
sta.addFirst(keep.substring(1));
keep="";
break;
case '+':
val=Double.valueOf(sta.removeFirst())+Double.valueOf(sta.removeFirst());
sta.addFirst(String.valueOf(val));
break;
case '-':
if(keep=="["){
keep+=String.valueOf(c);
break;
}
valf=Double.valueOf(sta.removeFirst());
vall=Double.valueOf(sta.removeFirst());
sta.addFirst(String.valueOf(vall-valf));
break;
case '*':
val=Double.valueOf(sta.removeFirst())*Double.valueOf(sta.removeFirst());
sta.addFirst(String.valueOf(val));
break;
case '/':
valf=Double.valueOf(sta.removeFirst());
vall=Double.valueOf(sta.removeFirst());
sta.addFirst(String.valueOf(vall/valf));
break;
default:
keep+=c;
break;
}
}
ret=Double.valueOf(sta.removeFirst());
return ret;
}
}
