Maya just turned 14 years old. Her parents started saving $350 each month for her college education when she was born. Her parents want to make sure there will be enough money in her account by the time she turns 18 to cover tuition and expenses at an in-state, four-year college. By how many dollars will Maya's parents need to raise their monthly contribution for the next 4 years if they want to save at least $80,000? Give your answer to the nearest dollar.