Please provide all relevant computations and steps. Thank you.

Problem 6-26B Effects of the level of production on an outsourcing decision One of Riku Company's major products is a fuel additive designed to improve fuel efficiency and keep engines clean. Riku, a petrochemical firm, makes and sells 100,000 units of the fuel additive per year. Its management is evaluating the possibility of having an outside supplier manufacture the product for Riku for $3.20 each. Riku would continue to sell and distribute the fuel additive under its own brand name for either alternative. Riku's accountant constructed the following profitability analysis. Page 297 Revenue (100,000 units * $6.00) $600,000 Unit-level materials costs (100,000 units