Time for your first Hotshot challenge! Your task is to build a simple calculator (or if you are ambitious, a scientific calculator). It should be fully functional and should have custom-styled buttons and a screen. Try to make it look as close to real physical calculators as you can.

When you are done, we invite you to search in your computer for complex GUI programs. These can range from your operating system programs such as the search bar, to some simple dialog-based widgets. Try to replicate any chosen GUIs using Tkinter.