Need help with implementing calculator -- 3

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Greetings of the day! I would lo e to assist you with the project. I can assure you the best quality work. Would love to hear back and discuss more over chat. Regards.

last time I used lex / yacc was when I wrote a compiler for a custom Turing machine grammar, that was very complicated compared to this.

I am good programmer, with given details of requirements, would promise a quality deliverable. I am passionate about programming and mathematics, So this requirement interests me a lot. even if the pay is reduced, no matter, would be happy to help you given details. what mathematical operations are you looking at, is it an enhancement to the existing application or we need to write a new app for this. provided more details would help me understand better.