yogi_Add a Specified Number Every Nth Day From A Specified Date

Google Spreadsheet   Post  #2227

Yogi Anand, D.Eng, P.E.      ANAND Enterprises LLC -- Rochester Hills MI     Aug-19-2017
question by: MathMan123

https://productforums.google.com/forum/?utm_medium=email&utm_source=ba_notification#!topic/docs/yK3diow3dHg;context-place=forum/docs

How to add a certain number every 30th day from a specific date?

If possible? I really hope someone might be able to help me out here if you have any ideas on how to do it please share it! 

Thanks in advance. 

     - Peter Hansen