can someone explain the archiving section?
I have 274 feeds. because I removed and added many feeds the number that is shows for adding new feeds ( for example like this freshrssdomain//i/?c=subscription&id=1283 ) is now in 1300.
I have set

Purge policy(By default)Maximum number of articles to keep 8
Maximum age of articles to keep: 1 month
Never delete favourites: yes
Never delete labels: yes
Never delete unread articles: yes
Minimum number of articles to keep per feed: 5

I have read that the first one doesn't count if it is too low.
I also have zero unread articles.
and I don't know what label articles are so I ignore that.

but even setting all this and having 300 favorite items and using purge , I still have this:
Maintenance Current user
4 644 articles (23.11 MiB)

how do I still have 4644 articles?
(Minimum number of articles to keep per feed=5) * 247 feeds + 300 favs = at most 1600

can someone explain this section in simple terms and show when they overlap what happens?
maybe with an example with numbers?