Can you please help me to answer the below question and also show me how to calculate in excel?

Calculating Profitability Index. Bill plans to open a self-serve grooming center in a storefront.The grooming equipment will cost $325,000, to be paid immediately.Bill expects aftertax cash inflows of $67,000 annually for 7 years, after which he plans to scrap the equipment and retire to the beaches of Nevis.The first cash inflow occurs at the end of the first year.Assume the required return is 13 percent.What is the project's PI?Should it be accepted?

Thank you