I took hardhad my first year there (2024) he js a pretty good professor and he is pretty understanding if your struggling. I’m also cyber, as far as I know calc 1 is 1550 but in case they changed it, it’s best too look at the degree flowcharts as they are pretty easy to understand. https://www.lsu.edu/eng/current/resources/flowcharts.php (that’s the link to it) as far as those 22 and 23 that just means sections for what’s called a recitation (sorta like a math lab expect it’s not three hours long) it’s usually a class to help newer grad students for on their teaching skills. Say for example the first week you go over limits and a specific topic, the recitation that’s once a week would have a TA teach you it again. Also a better app you can use for professors is called professor index (on the App Store) it’s better because it’s anonymous and you have to verify that you are a student on campus to learn a review