Please help with parts B1 and C

Bain Corporation makes and sells state-of-the-art electronics products. One of its segments produces The Math Machine, an inexpensive calculator. The company's chief accountant recently prepared the following income statement showing annual revenues and expenses associated with the segment's operating activities. The relevant range for the production and sale of the calculators is between 30,000 and 60,000 units per year, Required a. A large discount store has approached the owner of Bain about buying 5,000 calculators. It would replace The Math Machine's label with its own logo to avoid affecting Bain's existing customers. Because the offer was made directly to the owner, no sales commissions on the transaction would be involved, but the discount store is willing to pay only $6.60 per calculator. Calculate the contribution margin from the special order. Based on quantitative factors alone, should Bain accept the special order? b-1. Bain has an opportunity to buy the 40,000 calculators it currently makes from a reliable competing manufacturer for $6.72 each. The product meets Bain's quality standards. Bain could continue to use its own logo, advertising program, and sales force to distribute the products. Calculate the total cost for Bain to make and buy the 40,000 calculators. b-2. Should Bain buy the calculators or continue to make them? b-3. Should Bain buy the calculators or continue to make them, if the volume of sales were increased to 60,000 units? c. Because the calculator division is currently operating at a loss, should it be eliminated from the company's operations? Support your answer with appropriate computations. Specifically, by what amount would the segment's elimination increase or decrease profitability? Complete this question by entering your answers in the tabs below. Bain has an opportunity to buy the 40,000 calculators it currently makes from a reliable competing manufacturer for $6.72 each. The product meets Bain's quality standards. Bain could continue to use its own logo, advertising program, and sales force to distribute the products. Calculate the total cost for Bain to make and buy the 40,000 calculators. Complete this question by entering your answers in the tabs below. Because the calculator division is currently operating at a loss, should it be eliminated from the company's operations? Support your answer with appropriate computations. Specifically, by what amount would the segment's elimination increase or decrease profitability