On January 1, a company issued 10%, 10-year bonds with a face amount of $90 million for $84,622,410 to yield 11%. Interest is paid semiannually. What was interest expense at the effective interest rate on June 30, the first interest date? (Enter your answers in whole dollars. Round percentage answers to 1 decimal place (e.g., 0.0234 should be entered as 2.3).)

Amount	x	Effective Rate (%)	=	Interest expense
??	x	5.5%	=	???