Microeconomics 202 question HELP!?

With current technology, suppose a firm is producing 800 loaves of banana bread daily. Also, assume that the least-cost combination of resources in producing those loaves is 6 units of labor, 5 units of land, 4 units of capital, and 2 unit of entrepreneurial ability, selling at prices of $40, $60, $60, and $20, respectively.