In a slow year, Deutsche Burgers will produce 2 million hamburgers at a total cost of $3.5 million. In a good year, it can produce 4 million hamburgers at a total cost of $4.5 million.

1. What are the fixed costs of hamburger production? (Enter your answer in millions rounded to 1 decimal place.)
2. What are the variable costs when the firm produces 2 million hamburgers? (Enter your answer in millions.)
3. What is the average cost per burger when the firm produces 1 million hamburgers? (Round your answer to 2 decimal places.)
4. What is the average cost when the firm produces 2 million hamburgers?