Please show the detailed calculations with explanation. Thank you so much I am crying:((

In company A, purchases are often made under normal credit terms of 10/10, r/20 and normal credit terms of 10/5, 1/15 are allowed for customers. The company and its customers usually take discount in most purchases and sales, respectively. During January, there were following transactions related to its inventory purchases and sales. Case 1 1. The purchase invoices showed the amount $400, normal credit term of 10/10, n/20. The company paid $360 for its purchases. 2. Half of the purchased Inventory was sold for $300, normal credit terms of 10/5, 1/15. The customers took discount, and then $270 was collected. Case 2 1. The purchase invoices showed the amount $400, normal credit term of 10/10, 1/20. It is unusual that the company deferred the payment in 20 days because it faced to cash deficit problem when the customers deferred their payment. 2. Half of the purchased inventory was sold for $300, normal credit terms of 10/5, 0/15. The customers deferred their payment in 15 days. Requirement Fill out the table below and show your workings. Case 1 Case 2 Inventory - Jannuary 31 Sales Less: COGS Operating profit Add: Finance income Less: Finance expense Total profit for Jannuary