Mike has already invested $80,000 and $10,000 for repairing his auto repair shop for periods 0 and 1. Knowing that he can receive more customers with car repair requests and Mike projects a uniform annual cash inflow from period 2 onwards. If the annual interest rate is 5%, then find the minimum uniform periodic cash flow so that the discounted payback period ends at period 8.

It is required to perform calculations in Microsoft Excel. The goal seek function is needed to derive the answer.