+8 what i mean by this is that if you want to make a new variable called "x" and set it's value to 5, how will you do it? basically, a mock-up can be, if you type something like "x=5" in the calculator, a new variable will be defined on and it will both be on the button panel AND you can type it out. so if you wanted to type x+x and press enter, it will return 10.
but wait, i arleady think you can do it by clicking on the three dots and choosing "math formula input".
mock-up images:
\(x=5\) \(x+x=10\)
