The site has a collection of free online calculators to help with your calculations.
This page has a quick and simple calculator if you just want a something for uncomplicated calculations. It has a very clean layout and you can type directly into the calculator screen if you don’t want to use the buttons.
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“The essence of mathematics is not to make simple things complicated but to make complicated things simple” ~ S. Gudder
“A man has one hundred dollars and you leave him with two dollars. That’s subtraction” ~Mae West