Tell: Writing fifty-two hundred letters takes a long time.
Show: Writing fifty-two hundred letters took a long time.
And that's still telling, when you think about it. I could show every minute of it and bore you to death. It's narrative summary rather than immediate scene, which is always more tell-y. But it gets the story down the road and gets the writer out of it.
Part of the reason I find present tense a bit icky, I'm sure. That and reading way, way too many screenplays.