Terrell is a competitive stair clmber. He competes by climbing stairs as fast as he can. This year he wants to climb 400 stories. The Burj Khalifa in the United Arab Emirates is the world's tallest building with 163 stories. The Petronas Towers, the tallest building in Malaysia, has 88 stories. The Zifeng Tower in China has 89 stories. If Terrell climbs these three buildings, how many stores does he climb all together?