Jim wants to go to college. He does not have enough money to attend a four-year university, so he plans to attend El Paso Community College until he saves enough money to transfer to a university. Jim has $2,800 saved, but El Paso Community College costs $8,900 a year. He received a $2,000 grant and wants to work to earn 50% of the remaining cost. How much money does he need to earn from his job?