McNally Inc. has sales of $1,000,000 million per year, all on credit terms calling for payment within 30 days, and its accounts receivable are...

McNally Inc. has sales of $1,000,000 million per year, all on credit terms calling for payment within 30 days, and its accounts receivable are $200,000. How much capital would be released if McNally could take actions that caused all of its customers making on-time payments, without affecting sales, i.e., by how much would its accounts receivable decline?