Wilma works at a bird sanctuary and stores bird seed into plactic containers. She has 3 small containers that hold 8 pounds of bird seed each and 6 large containers that hold 12 pounds of birdseed each. Each container was full untill she used 4 pounds of birdseed. She wants to put some of the remaining birdseed into 30 bird feeders that can hold 2 pounds each. How much birdseed does she have left over? Show the expression you used to find your answer.