Grade 11 math please answer as detailed as possible and clear as possible. Compound and Simple Interest

2. Winnie needs a new washer and dryer and he finds one for $2112. He puts $500 up front but needs to take out a loan for the remaining amount. After a year and a half, he has paid off the loan that totaled to $1879. What was the annual interest rate that Winnie was being charged if it was compound semi-annually