Changes to Scratchpad between r79 and r80

If you have to pay someone `x%` of principal `y`, the total amount needed to pay is `''Total'' = Y / (1 - (X / 100))` --> 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 r79
     Only in r80
     -->      Modified slightly between r79 and r80