Can anyone help me?

White Corporation has decided to purchase a new machine that costs $2.4 million. The machine will be depreciated on a straight-line basis and will be worthless after four years. The corporate tax rate is 24%. The Black Bank has offered White a 4-year loan for $2.4 milion. The repayment schedule is four yearly principal repayments of $600,000 and an interest charge of 9% on the outstanding balance of the loan at the beginning of each year. Both principal repayments and interest are due at the end of each year. Grey Leasing Corporation offers to lease the same machine to White. Lease payments of $710,000 per year are due at the beginning of each of the four years of the lease. a. Should White lease the machine or buy it with bank financing? b. What is the annual lease payment that will make White indifferent to whether it leases the machine or purchases it