Tex rendered equasions
Tex is a markup language used to render mathematics (document typesetting technically, but most people I know use it for the equation rendering), TTH (link below) is a Tex=>HTML converter which could (in my mind) easily be used to beautify your calculator
http://hutchinson.belmont.ma.us/tth/
P.S. if Tex isn't your thing, MathML is an alternative.
P.P.S. requiring an email address discourages some from leaving feedback (myself included)
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Thanks so much for the feedback! I might have a "tex tag" which could be like $$x = y + z$$ which would render the output as TEX.
I'll see if I can turn off the email requirement for feedback on UserVoice, I definitely don't want it to be a roadblock for people :).