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2018-12-19Primitive Calculator done!Haidong Ji
Once again, this is a challenging but fun puzzle to solve. Key reflections are: 1. It pays to read and try to understand the problem as early as possible. "Sleeping on it" really, really helps. Deep appreciation and clarity came as I was thinking about it before falling asleep, walking the dogs, and just be; 2. Small steps, but do take them! They lead to success! Hooray :)