Excel 2010 has a quick Auto Calculator feature which can be found in bottom right corner of Excel window.
Usage:- Suppose you need to find the sum of values in a row / column / range, just select that and look into the bottom right corner of Excel window, you will find the Sum along with Average and Count results for the data you selected. Also when you right click on the results, you will find a pop-up with the calculations like Max, Min, Numerical Count etc. (see the image attached)
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