Typically, you are misunderstanding what it is about. The math deals with instantaneous format of DNA, NOT because it happens in a fraction of a second but because it is talking about a single molecule that is formed in one process.
The objections pointing out this isn't how it would happen aren't objecting to it taking some time to do, they are objecting to the idea that the entire molecule would be formed in one operation.
You still haven't dealt with the other issues brought up. Why don't you address those? Why don't you acknowledge that this mathematical excercise is meaningless, as is implied when you admit it applies to a random process? Why don't you correct yourself?
No, you are incorrect. Each monkey in the analogy types letters one at a time for years, rather than typing all of its output simultaneously as you claim.
Thus, the math deals with the sequence of data, not with instantaneous data.