Home Infusion provides an average of 15 home health visits a day at an average net charge of $115 per visit, for $1,147 in average daily billings (ADB). They provide services approximately 221 days per year. All services are paid by two third-party payers: One pays for half of the billing 24 days after the service is provided and the second pays for the other half of billings in 7 days. Average cost of debt (i.e. the interest rate on bank loans) is 13%. What is the average accounts receivable balance? (Do not round intermediate calculations and round your final answer to 2 decimal places. Omit the "\$" sign and commas in your response. For example, \$12.3456 should be entered as 12.35.)