Riya Khatri, contract negotlator for Nebula Airframe Company, is currently involved in bidding on a follow-up government contract. In gathering cost data from the first three units, which Nebula produced under a research and development contract, she found that the first unit took 2,000 labor hours, the second took 1,300 labor hours, and the third took 1,220 hours. Use Exhlbit 6.5. In a contract for three more units, how many labor hours should Khatri plan for? Note: Round your answer to the nearest whole number