Malcolm is attending a 4-year university. As a freshman, he was approved for a 10-year, federal unsubsidized student loan in the amount of $7,500 at 5.62%. He has the option of beginning repayment of the loan in 4.5 years. During this nonpayment time, interest will accrue at 5.62%. How much interest will he accrue during the 4.5-year nonpayment period