BestCo acquires an asset for a cost of $700,000. It's useful life is estimated to be 10 years, a MACRS-GDS property class of 7 years, and an estimated salvage value after 10 years of $75,000. It was financed with a $200,000 down payment and a loan of $500,000 over a period of 5 years with interest at 10%. Loan payments are made in equal annual amounts (principal plus interest) over the 5 years. What is the book value at the end of the 4th year? [enter your answer as a whole number, with no dollar sign or comma] 322,560