title: str to int issue 'int' object not callable when var set for multiplication
body: <p>Some of the code can be ignored, I am trying to turn a str into int, while doing so I seem to be getting this error. 'int' object is not callable</p>
  
  <p>llb and lw are not mentioned anywhere else in the code only in this section. and it's the first and only time they are set. </p>
  
  <p>I have been fiddling with this for hrs now and can't seem to figure it out. Nothing else with this error seems to match the same scenario with my error.</p>
  
  <p>llb is normally set to something simple like 2 from a post</p>
  
  <pre><code>@app.route('/printlab', methods=['POST'])
  def printlab():
   if request.method == 'POST':
       lfname = request.form['first_name']
       llname = request.form['last_name']
       lstate = request.form['state']
       lcity = request.form['city']
       laddress = request.form['shipping_address']
       lzip = request.form['zip']
       llb = request.form['lbs']
       loz = request.form['ozs']
       lw = (int(llb)*16)
       return lw
  </code></pre>
  
  <p>edit: added error below</p>
  
  <pre><code>Traceback (most recent call last):
  File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1997, 
  in __call__
  return self.wsgi_app(environ, start_response)
  File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1985, 
  in wsgi_app
  response = self.handle_exception(e)
  File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1540, 
  in handle_exception
  reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1982, in wsgi_app
  response = self.full_dispatch_request()
  File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1615, in full_dispatch_request
  return self.finalize_request(rv)
  File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1630, in finalize_request
  response = self.make_response(rv)
  File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1740, in make_response
  rv = self.response_class.force_type(rv, request.environ)
  File "/usr/local/lib/python2.7/site-packages/werkzeug/wrappers.py", line 921, in force_type
  response = BaseResponse(*_run_wsgi_app(response, environ))
  File "/usr/local/lib/python2.7/site-packages/werkzeug/wrappers.py", line 59, in _run_wsgi_app
  return _run_wsgi_app(*args)
  File "/usr/local/lib/python2.7/site-packages/werkzeug/test.py", line 923, in run_wsgi_app
  app_rv = app(environ, start_response)
  TypeError: 'int' object is not callable
  </code></pre>