Please include excel calculations - I've attempted three similiar problems and been unable to come up with the correct answers for the Purchase portion.

The after-tax cash outflow associated with the lease in year 1 is $_______ ?

The after-tax cash outflow associated with the lease in year 2 is $______ ?

The after-tax cash outflow associated with the lease in year 3 is $ ______ ?

The after-tax cash outflow associated with the purchase in year 1 is $______ ?

The after-tax cash outflow associated with the purchase in year 2 is $______ ?

The after-tax cash outflow associated with the purchase in year 3 is $______ ?

The total present value of the after-tax cash outflows associated with the lease is $______ ?

The total present value of the after-tax cash outflows associated with the purchase is $______ ?

Which alternative would you recommend? Purchase or Lease

future tax benefit associated with the purchase of the equipment at the end of year 3 under the lease option. a. Calculate the after-tax cash outflows associated with each alternative. (Hint: Because insurance and other costs are borne by the firm under both alternatives, those costs can be ignored here.) b. Calculate the present value of each cash outflow stream, using the after-tax cost of debt. c. Which alternative-lease or purchase-would you recommend? Why