Stephen made 10 round trips up and down a 40,000 foot tall mountain. If he reached 3/4 of the mountain's height on each of his trips, calculate the total distance he covered. Let's think step by step and output the final answer after "####".
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Up a mountain, Stephen covered 3/4*40000 = <<3/4*40000=30000>>30000 feet.
Coming down, Stephen covered another 30000 feet, making the total distance covered in one round to be 30000+30000 = <<30000+30000=60000>>60000.
Since Stephen made 10 round trips up and down the mountain, he covered 10*60000 = <<10*60000=600000>>600000
#### 600000
Stephen made 10 round trips up and down a 40,000 foot tall mountain. If he reached 3/4 of the mountain's height on each of his trips, calculate the total distance he covered.
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