Auerbach Inc. issued 4% bonds on October 1, 2018. The bonds have a maturity date of September 30, 2028 and a face value of $300 million. The bonds pay interest each March 31 and September 20, beginning March 31, 2019. The effective interest rate established by the market was 6%.

Required:
How much cash interest does Auerbach pay on March 31, 2019?