I see this bro's post.
https://dev.to/vinodchauhan7/react-calculator-18l5

And try a beautiful way to rewrite it, completely separate UI and logic!
https://codesandbox.io/s/react-calculator-8hvqw

Welcome to know more about Concent,
a predictable、zero-cost-use、progressive、high performance's enhanced staate management solution, born for build large and high performance react app。

By the way: attention the ICtx I marked in code, with jsdoc type annotation, you can click and see any details you want, of course, you can easily change it to ts code.