A terrific free online calculator

Here is something I use all the time in my practice and often in my “life” outside the practice:  Instacalc.  Put this thing on the menu bar of your browser and you won’t regret it.  You can get a lot of the functionality of Excel without having to call up Excel, and it beats the pants off a basic calculator.  Don’t forget that you can highlight an “Instacalc” result, copy it, and then paste it into your current application.