Consider a plowing service with capital fixed at 4 plows. The table shows how many driveways can be plowed as the number of workers increases. In addition, workers cost $50 each and plows cost $100 each.

LDriveways

00

1200

2500

3700

4800

The total fixed cost of producing 800 driveways is equal to $ __________and the total variable cost of producing 800 driveways is equal to $ __________.