Underwood Company has provided the following information prior to any year-end bad debt adjustment: Cash sales, $450,000 Credit sales, $1,350,000 Selling and administrative expenses, $330,000 Sales returns and allowances, $90,000 Gross profit, $1,470,000 Accounts receivable, $330,000 Sales discounts, $42,000 Allowance for doubtful accounts credit balance, $3,600 Alderwood estimates bad debt expense assuming that 1.5% of credit sales have historically been uncollectible. How much is Alderwood's bad debt exp