You have been offered a job with an unusual bonus structure. As long as you stay with the firm, you will get an extra $70,000$ every seven years starting seven years from now. What is the present value of this incentive if you plan to work for the company for $42$ years and the interest rate is $6\mathrm{.}4\%($EAR$).($note$,$ be careful not around any intermediate steps less than six decimal places$)$