With triple-entry bookkeeping, of course.
Went to the office, calculated that it’s only 120 steps to the seventh floor which is nothing and yet I still can’t do it in one go, attended an all-hands and heard news that is probably very important to investors and other people who think they can control the future, forgot to finish submitting my lunch order and had to eat leftover breakfast burrito, did the mandatory anti-harassment training that should be obvious to anyone and yet, and doinked around with some Kubernetes. That sounds like a lot, but most of it was sitting down.
Read (from the shelf): FAIL.
Written (second rewrite of Geometry for Mutants): 325, which pretty much eliminates the first draft. There are a couple of lines left as notes for later, but that’s all.