Below is an instruction that describes a task. Write a response that appropriately completes the request in French. Please answer in French.

### Instruction:
 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.


### Response:
 À chaque voyage, Stephen a parcouru (3/4) * 40 000 = <<(3/4)*40000=30000>>30 000 pieds.
Il a fait 10 voyages, donc la distance totale qu'il a parcourue est de 10 * 30 000 = <<10*30000=300000>>300 000 pieds.