OneNote 2010 included in Office 2010 suite is an amazing note taking application with lots of features. One of the useful features of OneNote 2010 is the ability to use as a calculator. Assume you are attending a lecture or an business meeting and you want to quickly calculate big numbers. Instead of opening the calculator in Windows, you can use OneNote to easily calculate numbers.
To calculate, simply type what you want to calculate. For example if you wanted to know what 534534 divided by 13 equals, type 534534/13= anywhere on the page. When you press the enter button or space button after the = symbol, OneNote 2010 automatically calculates the answer. Check out this video for a simple demo.
This is a very useful feature of OneNote to keep in mind next time you want to do some complex calculations quickly.