Enter an equation as you would normally write it. You can do +, -, *, /, and ^. Although only whole numbers are supported as exponents but I'm planning on adding things like routes and fractional exponents. You cannot do variables such as x or y.
This uses Inverse Polish Notation to allow equations unlike traditional Scratch calculators that can only do 2 numbers at a time such as "2 + 3". Inverse Polish Notation is another way of writing sums that is much easier and faster to read and calculate for a computer, but not for a human. Normally you would write "3 + 5", in Inverse Polish Notation you write it as "3 5 +". It uses the Shunting-yard algorithm to convert to this. It's quite adaptive to bad inputs so type in whatever you like and it should give a sensible output :).
