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SUBMIT YOUR IDEAChallenge 216 is done!
I know that there can be some ugly datasets out there, but the challenge datasets look like they designed by people who never heard of EF Codd, Ralph Kimball or Hadley Wickham. I continue to be amazed that Alteryx can get them in a usable format.
(I confess that I had to look at the solution to notice the ending totals had to be reduced by a constant.)
Definitely a tough challenge. I don't feel my solution is as concise as it could be.