I NEED HELP DOING THIS ON EXCEL

You are considering the acquisition of a small office building. The purchase price is $775,000. Seventy-five percent of the purchase price can be borrowed with a 30-year, 7.5 percent mortgage. Payments will be madeannually.Up-front financing costs will total 3 percent of the loan amount. The expected before-tax cash flows from operations, assuming a five-year holding period, are as follows:

YEAR BTCF

1 48492

2 53768

3 59282

4 65043

5 71058

The before-tax cash flow from the sale of the property is expected to be $295,050. What is the net present value of this investment, assuming a 12 percent required rate of return on levered cash flows? What is the levered internal rate of return?