6.4 Spectra Scientific of Santa Clara, California, manufactures Q-switched solid-state industrial lasers for LED substrate scribing and silicon wafer dicing. The company got a $60 million loan, amortized over a 5-year period at 8% per year interest. What is the amount of the unrecovered balance (a) immediately before the payment is made at the end of year 1, and (b) immediately after the first payment? (part A ans. $64800000)