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There is lots to learn thats for sure, yes it works out better on the 50/50 as the steem back dollar was originally set up when it had a value of $1, iit iscurrently trading over $3.50 so you get back more.

I found this calculator which helps you work out how much you can earn from a post -

https://docs.google.com/spreadsheets/d/1siXv1fFZl3QvQ4dkKOiXYTtuyX7ERRIw3G3o2yPeUn0/edit#gid=107578128

It is really helpful and it works out pretty accurate.