The stock gauges are not known for the greatest accuracy. Where ever it normally points to (regardless of number) is normal. When it reads higher then normal, it is running hotter.
If you have an accurate gauge, 180 is about as cold as you should run. 200 is nothing to worry about. 220 is time to back off a little and pay attention. 235 is when I start looking for a place to let it cool. When you get them this hot it is generally better to open the hood, nuetral, fast idle for a few minutes unless there is an obvious problem (missing belt, spewing water, etc.). Circulating water at a fast idle cools better then just shutting the engine off.