have you ever googled a simple maths question? I often come back to that and realise we've been in this era for quite a while. Calculator would probably be 1000x more efficient!
Sure, but I have to launch the calculator, instead of just typing it into the ever present search bar of my persistent open browser.
If I could just type it into my shell, that would be nice. I’m sure there’s some command (or one could be trivially made) to evaluate an equation, but then you get to play game with shell expansions and quotes.
In emacs I have to convolute the equation into prefix.