I am absolutely lost with drive permissions on Linux

I’m sorry, but you are really confusing me. I’m quite frankly not looking to learn here, I just want this to work.

I’m at this point in the directions, and it says run ls -la /disks, and this is what I get:

total 24
drwxr-xr-x 6 david david 4096 Oct 29 18:06 .
drwxr-xr-x 21 root root 4096 Oct 29 18:06 ..
drwxr-xr-x 2 david david 4096 Oct 29 18:06 12tb01
drwxr-xr-x 2 david david 4096 Oct 29 18:06 12tb02
drwxr-xr-x 2 david david 4096 Oct 29 18:06 satassd
drwxr-xr-x 2 david david 4096 Oct 29 18:06 seagate

Then is says:

Having created the directories as root, verify empty (unmounted) directory permissions are 0755 before mounting

but I don’t know how to check that because I don’t see those numbers in the output of ls -ls /disks.