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

### Instruction:
 In a day, Sam hunts 6 animals. Rob hunts half as many animals as Sam. Mark hunts 1/3 of the total of what Rob and Sam hunt. If Peter hunts 3 times as many animals as Mark does, how many animals do they all hunt in a day?


### Response:
 Rob hunts 1/2 * 6 animals/day = 3 animals/day. Rob and Sam hunt 3 animals/day + 6 animals/day = 9 animals/day. Mark hunts 1/3 * 9 animals/day = 3 animals in a day. Peter hunts 3 * 3 animals/day = 9 animals in a day. Rob, Mark, and Peter hunt 3 animals/day + 3 animals/day + 9 animals/day = 15 animals. In total, the four of them hunt 6 animals/day + 3 animals/day + 3 animals/day + 9 animals/day = 21 animals.