The author 'divides' literature into three categories. [=the author says that there are three categories of literature]
The teacher 'divided' the class (up) into four groups. = The teacher 'divided' (up) the class 'into' four groups.
Two 'divides evenly into' eight. [=eight can be divided into two an exact number of times with nothing left over]
(..) this'll work? It'll work. That's what you said about Sweetface. This'll work. Once they divide up, we take them, no trouble, right? Maybe. Boy, for a gunman, you're one hell (..)1969 Butch Cassidy and the Sundance Kid