Changes to Scratchpad between r66 and r80

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+eval
[return test]
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If you have to pay someone `''X''%` of principal `''Y''`, the total amount needed to pay is `''Total'' = ''Y'' / (1 - (''X'' / 100))`

Legend

     Only in r66
     Only in r80
     -->      Modified slightly between r66 and r80