I am stuck on part A and part C-2. please help!

2. In industries that process joint products, the costs of the raw materials inputs and the sales values of intermediate and final products are often volatle. Change the data area of your worksheet to match the following: If your formulas are correct, you should get the correct answers to the following questions. a. What is the overall profit if all intermediate products are processed into final products? Answer is complete but not entirely correct. b. What is the financial advantage (disadvantage) from further processing? c-1. With these new costs and selling prices, what recommendations would you make concerning the company's operations? c2. If your recommendation in part (c-1) is followed, what would be the company's overall profit