Mathematical expressions are one of the most complex points when we are talking about compilers and interpreters.

When dealing with the flow, compilers and interpreters are different. In the case of an interpreted language, operations are performed until the declarations (assignments, control structures, data output, etc.) are finished or some type of error is generated.

When I started in software development, I gathered a huge amount of links, books, and articles to study, but I was never able to succeed.