You have just sold your house for $ 1 comma 000 comma 000 in cash. Your mortgage was originally a 30-year mortgage with monthly payments and an initial balance of $ 800 comma 000. The mortgage is currently exactly 18 years old, and you have just made a payment. If the interest rate on the mortgage is 5.25 % (APR), how much cash will you have from the sale once you pay off the mortgage? (Note: Be careful not to round any intermediate steps less than six decimal places.)