Prepaid Expense Spreadsheet - Total Amount Expensed > Invoice Total

Hi there! I am working on a new prepaid expenses workbook for my company. The formulas are nearly there! The only problem I seem to have is that the total amount being expensed is great than the total of the individual invoice amount.

Example:

The total invoice = $100
# months to expense = 10
Amount per month SHOULD BE = $10/mo for 10 months
Amount my formulas are expenseing = $11/month for 10 months.

The formula is adding an extra payment. This is my first time using Max/Min formulas in this way. I am open to other formula suggestions!!

Thanks so much!