i have to write the anwser out on loose leaf please help !

As a result of the closure of the mine at which he had been employed, Las Or received a $27.000 severance settlement on his 53rd birthday He "rolled the severance pay into a new RASP and then at age 62 used the accumulated funds to purchase an annuity paying $491 31 at the beginning of each month. I the RASP and the annuity earn 8.5% compounded annually, what is the term of the annuity rounded to the nearest month