Magic Fites has total receivables of $4,200, which represent 20 days' sales. Total assets are $81,000. The firm's operating profit margin is 5.60%. Assume a 365 -day year. a. What is the firm's sales-to-assets ratio? Note: Round your answer to 2 decimal places. b. What is the firm's return on assets? Note: Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places