(Warning: the following answer isn't stupid)
It's actually equal to any number in "0/0", and it's nothing at all in "a/0" where a != 0. To understand it, look at:
x = a/0
This can be rearranged as:
a = 0x
Therefore, "x" can be any number if a = 0, because 0x will always be equal to 0 and the equation will always be true. While is a != 0, the equation doesn't have any answers, so a number "x" does not exist.
Do you understand?
EDIT: Ninja'd -_- I'm keeping the original answer, by my new answer "yes". Although I haven't seen it, I have read the book, and peter jackson simply wouldn't be able to do anything bad with such a book.