I am not a mathematician, so I will basically summarize the argument taking place in a thread at WebmasterWorld named Google caculator 1 / 0 = 0?!. Basically, the thread creator said he did a search in Google for 1 / 0 and received the Google Calculator result that read:
|1 / 0 = 0|
The member said, "anything / 0 = undefined" and not = to 0. Others say that zero is close enough. I have no opinion.