Can someone help me with this ACCT problem?

Number of Days Past Due Toot Auto Supply distributes new and used automobile parts to local dealers throughout the Midwest. Toot's credit terms are n/30. As of the end of business on October 31, the following accounts receivable were past due: Account Due Date Amount Avalanche Auto August 15 $12,000 $ Bales Auto October 4 2,400 Derby Auto Repair June 26 3,900 Lucky's Auto Repair September 10 6,600 Pit Stop Auto September 24 1,100 Reliable Auto Repair July 2 9,750 Trident Auto August 25 1,800 Valley Repair & Tow & May 23 4,000 Determine the number of days each account is past due as of October 31. Account Due Date Number of Days Past Due Avalanche Auto August 15 Bales Auto October 4 Derby Auto Repair June 26 Lucky's Auto Repair September 10 Pit Stop Auto September 24 Reliable Auto Repair July 2 Trident Auto August 25 Valley Repair & Tow May 23