Please use the calculator and explain to me how you did it.

Roane Company has entered into two lease agreements. In each case the cash equivalent purchase price of the asset acquired is known, the interest rate is 6%, and you wish to find the number of required lease payments. Lease A covers office equipment which could be purchased for $70,000. Roane Company has, however, chosen to lease the equipment for $11,000 per year, payable at start of each of the next ___ years. Lease A _____ years Lease B applies to a machine which can be purchased for $66,000. Roane Company has chosen to lease the machine for $10,000 per year. Payments are due at the end of each year. Lease B _____ years