Correct an set of inventory purchase level calculations

I have a set of calculations that determines when and how many of an item should be purchased. I have not been able to get the result correct. NOTE: I intend to close the project 1 week after I receive the corrected calculation to provide my customer time to test the results in various situations. Please see the attached text document for the calculations and a few more details. ## Deliverables The rewritten calculation using the existing functions or other common functions that I can relate to the language used. ## Platform N/A