That exclamation point is to say, "Part 2" in a very excited manner. It is not "Part 2
factorial," which is the multiplicative product of all counting numbers up to and including 2. (For the record, though, 2! = 2 x 1 = 2, so it comes out the same either way, just less excited and more mathematical.)
Anyway, remember
a few days ago when I posted
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