When I was a kid we had German as mandatory language to learn. I remember that when learning numbers we thought that the teacher is making it up and is incompet

When I was a kid we had German as mandatory language to learn. I remember that when learning numbers we thought that the teacher is making it up and is incompetent. It took a lot of explaining that it is actually for real. Anyway, due to these things I never got to learn this language, my brain just refused to memorise these rules :/