During the last three months of the year, Company A made a total of $1,500,000 in credit sales and had $1,050,000 in accounts receivable. The time period covers 92 days. Company A’s DSO for that period is calculated as follows: 1,050,000 divided by 1,500,000 equals 0.7. 0.7 multiplied by 92 equals 64.4. The DSO for this business in this period is 64.4.