Division

Division is not what you do when you try to find out what 8/3 is (2.6repeatingdecimal7, if you're wondering), but rather it is instead a subsection of a department.

A division might either be a section of the department that deals with one particular fandom (like for instance, the Department of Mary Sues and its famous Lord of the Rings/Tolkien Division), or it might specialize even further within a department, not sticking to one fandom but a type of badfic, but due to a smaller amount of badfic might not warrant a department itself (example being the Division of Multiple Offenses).