An insurance broker calls you and despite your finance professor's warnings, you listen to their offer. The offered insurance product requires you to make payments every four month of $85 and do so for the next 21 years (1st payment is 4 months from today). The insurance product offers to meet your required return of 10% per year (i.e. effective), and pay interest every four month. What amount of money should the insurance product promise you at the end of 21 years