Rommel Trucking uses cargo miles driven (CMD) as an activity base. The company reports the following breakdown of cost behaviors: Purely fixed costs = $900,000/year Purely variable costs = $2.50/CMD Semivariable (mixed) costs = $100,000/year + $0.50/CMD Compute the company's estimated total cost per CMD if the following miles are logged by drivers during the year:

1. The estimated total cost per CMD at 400,000 miles logged is $ ______.

2. The estimated total cost per CMD at 800,000 miles logged is $ _____.

3. The estimated total cost per CMD at 1 million miles logged is $ _____.