Corporation Y issued a $1,000,000 bond for its stated principal amount on January 15, 2015. The bond matures in 10 years and provides for semiannual interest payments at a rate of 6%. On July 15, 2015, B purchases the bond for $960,000. Assume that B sells the bond on July 15, 2017 for $980,000. What is market discount?Calculate the amount of accured market discount as of July 15, 2017.