Desktop Basic Calculator Application

I want a straightforward desktop calculator that handles the everyday arithmetic I use—addition, subtraction, multiplication and division—nothing scientific, nothing extra. The app must run smoothly on a standard Windows desktop, open quickly, and present a clean, uncluttered interface with support for decimal input, clear / back-space, and basic memory keys (M+, M-, MR, MC).

Deliverables
• Compiled desktop executable that works on Windows 10 and newer
• Well-commented source code so I can modify or recompile later
• Brief read-me explaining build steps and any third-party libraries used

I’m flexible on the tech stack—C#, JavaFX, Python (Tkinter or PyQt) or something similarly common is fine—as long as the final program is lightweight and easy to install without additional fees or licenses. Once the executable meets the described functionality and passes a quick test on my machine, the project is complete.