This puzzle concerns the number 1,000,000! and that exclamation point is there for a reason. The number you need is 1,000,000 times 999,999 times 999,998, etc, all the way down to one. But I am not asking you to give me that number as it is very long, with millions of digits. I'm not even asking you to compute it, because even with an arbitrary precision calculator you will be working much too hard. Instead, to solve the puzzle you need to be able to tell me (or, rather, Certitude), two things: first, how many zeros appear at the end of this massive number? I'll tell you that there are more than 100,000 and fewer than a million final zeros. Second, what are the final six nonzero digits of this number?
Let the number of trailing zeros be AAAAAA. Let the final six nonzero digits be BBBBBB. Enter AAAAAA BBBBBB into Certitude and you will get the final coordinates.
You can validate your puzzle solution with certitude.