When I was in High School in the 70's, most high schools didn't even offer calculus.I'm not sure whether to make fun of this guy or seriously address his posting. He's no physicist.
Infinity divided by infinity is covered in first year calculus.
L'Hôpital's rule - Wikipedia, the free encyclopedia
Calculus is for high-schoolers, and by your tone of voice you took it in college, which discredits any arguments on mathematics from you. As a side note, if you're not that good at math, don't make misconceptions by expressing your ignorance.
Please read this webpage to enrich your lack of information; common misconceptions on infinity. (If you didn't know, 0/0 is a type of infinity, and of course, highschool math told you that it was inconclusive or some dumb term."
Common Errors in College Math
specific quote to look for: "In a similar fashion,do not have quick and easy answers; they too require more specialized and sophisticated analyses."
However, infinity/infinity is inderterminate, except under circumstances already mentioned - L'Hopital's rule.
That is, in the set of real numbers, at least.
And also, black holes do not have infinite mass. From our perspective, they have infinite density.
Perhaps you shouldn't make misconceptions by expressing your ignorance.