Build a simple four function (addition, subtraction, multiplication, division) calculator.
Your application should be written with React Native and TypeScript. It must provide a GUI interface and work like a standard calculator. Note that you are not required to implement the memory functions (M+/MR/MC).
You will be evaluated on the following criteria:
- Design/UI/UX
- Functional accuracy and completeness
- Code architecture/structure, style, and readability
- Code organization and modularity