From: klee@unibwm.de   
      
   On 07.02.2022 15:31, Chris Roberts wrote:   
      
   > I see what you mean on the "numbers staring with "0" are octal" (That is why   
   it wouldn't work with "08" in retirement date. See, I am learned something   
   already... Thanks. )   
      
   set n=09   
   set /a m=1%n%-100   
   echo %n% - %m%   
      
      
   > set /a diff_y=%RetY%-%PresY%   
   > set /a diff_m=%RetM%-%PresM%   
      
   And if %PresM% is greater than %RetM%?   
      
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