SumThing allows you to quickly calculate the sum of any table cells on any web page! Simply activate the plugin while on the web page and drag to select the cells you want to tally up! You can also select individual cells by holding CTRL and clicking on the different cells you want to add up! SumThing works on all currency formats and takes into account negative sums and varying number formats. Save yourself the time from copying and pasting tables into Excel or Google Docs to find out the sum! Advanced features include: Average, Max, Min, and COUNTA!