(https://github.com/wavecloudzzz/java-project-61/actions)
(https://codeclimate.com/github/wavecloudzzz/java-project-61/maintainability)
Even https://asciinema.org/a/dfHquXApOdg1XRnPjpUgGZm6P
Calc https://asciinema.org/a/632675
GCD https://asciinema.org/a/632849
Progression https://asciinema.org/a/632884