Dow Chemical needs a larger space for their corporate headquarters, so they are purchasing a new building. The company has secured a loan through Wells Fargo, which charges 8% interest per year, compounded quarterly. Dow Chemical will make quarterly payments of $20,000 for 15 years in order to pay off the loan.

What is the total value of Dow Chemical's loan at the end of 15 years from now?

Suppose Dow Chemical wants to sell the building at the end of the 10^th year (after the 40^th payment). If Dow Chemical sells the building after making the 40th payment, what remaining balance does Dow Chemical owe to Wells Fargo in order to pay off the initial loan?