help with the one that is incorrect please, thank you!

Sheridan Co. had the following transactions during October. 1. On October 8, purchased merchandise on account from Sunland Company for $18,700, terms 2/10,n/30. 2. On October 9, paid freight costs of $570 on merchandise purchased from Sunland Company. 3. On October 11 , returned $3,800 of October 8 merchandise to Sunland Company. 4. On October 18, paid the amount due to Sunland Company in full. Use a tabular summary to record the transactions listed above for Sheridan Co.'s books. SheridanCo. uses a perpetual inventory system. Include margin explanations for the changes in revenues and expenses.(Enter negative amounts using either a negative sign preceding the number e.g. 45 or parentheses e.g. (45).) 9 570 570 11 3800 3800 18 14602