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

### Instruction:
 西奥、梅森和罗克西是兄弟姐妹。西奥每天喝8杯水。梅森每天喝7杯水。罗克西每天喝9杯水。一个星期里，兄弟姐妹一共喝了多少杯水？


### Response:
 每天，三个兄弟姐妹一共喝了8 + 7 + 9 = <<8+7+9=24>>24杯水。
一个星期里，他们一共喝了24 x 7 = <<24*7=168>>168杯水。