Please answer the question clearly and fully thank you

Donovan inc. has a debt-equity ratio of 0.5. The company is considering a new plant that will cost $50 million to bulld. When the company issues new equity. it incurs a flotation cost of 5%. The flotation cost of new debt is 3%. What is the initial cost of the plant if the company raises all capital externally? What if it typically uses 40% of retained earnings? You must show the steps