In a slow year, Deutsche Burgers will produce 4.0 million hamburgers at a total cost of $5.5 million. In a good year, it can produce 8.0 million hamburgers at a total cost of $6.8 million. a. What are the fixed costs of hamburger production? (Enter your answer in millions rounded to 1 decimal place. Do not round intermediate calculations.) b. What are the variable costs when the firm produces 4.0 million hamburgers? (Enter your answer in millions rounded to 1 decimal place. Do not round intermediate calculations.) c. What is the average cost per burger when the firm produces 2.00 million hamburgers? (Round your answer to 2 decimal places. Do not round intermediate calculations.) d. What is the average cost when the firm produces 4.0 million hamburgers? (Round your answer to 2 decimal places. Do not round intermediate calculations.)