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About this Add-on
Quick Calculator works well with the Ctrl+Click feature of Firefox that allows you to select multiple table cells. Try it out now on any web page with lots of numbers!
Quick Calculator allows you to choose by right click on descktop a calculation for counting, sum, average, min and max functions.
Install and try it out!
1) plugin works for data in table cells only
2) It reads digits with comma by american standard.