Re: N / 0 = . . . ?
When I went to university, n/0 was just plain bad news...don't do it, don't use it, and most certainly don't code it.
Imagine my surprise when I found that Javascript has a result for it:
n/0 = NaN
where NaN is "Not a Number." Weird construct. It doesn't equal anything, including itself.
Works for me!! :-)