Thats a lot of pushups. I wonder if they are in proper form though because I can do quite a few "half-baked" ones every day.
So...i looked into it, since an NFL team surgeon fixed my torn rotator cuff. Turns out the answer isn't a static constant, but rather a function of a physiological structure that varies from person to person.
We're above the pay grade of crossfit level 1 at that point, probably. Here's a reference to one such anatomical variable, that varies person by person.