var s:string;
    n:longint;
    
function termen:real; forward;
function factor:real; forward;

function eval:real;
var r:real;
begin
  r:=termen;
  while (n<=length(s)) and ((s[n]='+') or (s[n]='-')) do begin
    inc(n);
    if s[n-1]='+' then r:=r+termen
    else r:=r-termen
  end;
  eval:=r;
end;

function termen:real;
var r:real;
begin 
  r:=factor;
  while (n<=length(s)) and ((s[n]='*') or (s[n]='/')) do begin
    inc(n);
    if s[n-1]='*' then r:=r*factor
    else r:=r div factor;
  end;
  termen:=r;
end;

function factor:real;
var r:real;
begin
  r:=0;
  if s[n]='(' then begin
    inc(n);
    r:=eval;
    inc(n);
  end else begin
    while (n<=length(s)) and ((s[n]>='0') and (s[n]<='9')) do begin
      r:=r*10+ord(s[n])-ord('0');
      inc(n);
    end;
  end;
  factor:=r;
end;
    
begin
  assign(input,'evaluare.in');
  assign(output,'evaluare.out');
  reset(input);
  rewrite(output);
  read(s);
  n:=1;
  write(eval);
end.