Python Tkinter Calculator App

I’m looking for someone who can turn a straightforward brief into a polished little desktop calculator. Python 3 and Tkinter are both must-haves because I want the finished program to run out-of-the-box on any standard installation... (Budget: ₹12500 - ₹37500 INR, Jobs: Arduino, C Programming, Desktop Application, Programming, Software Architecture, Software Development, Software Engineering)