84000

http://en.wikipedia.org/wiki/Diyu

https://www.google.com/search?q=84+births

Ten Courts of Hell
http://wheresidewalksend.com/court-of-hell/ 
http://www.fulltable.com/VTS/h/hc/hc.htm 

Tube
https://www.youtube.com/results?search_query=Ten+Courts+of+Hell 

Species
http://08be.blogspot.com/2014/08/8400000.html

Images

https://www.google.com/search?site=imghp&tbm=isch&source=hp&biw=1280&bih=643&q=84000+miscellaneous+hells

https://www.google.com/search?site=imghp&tbm=isch&source=hp&biw=1280&bih=643&q=8400000+species