So does that mean my double roll is wasted and I just need to read 300 pages to spring myself from jail?
(Edited again): I've used 300 pages from the jail library to spring myself from jail, so I'll be using my book to add pages to the jail library. See, I'm just visiting:
Now, what have I been meaning to read that's just over 300 pages?
(311, 320, & 320 pages respectively)