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

### Instruction:
 为了达到医生推荐的水分摄入量，哈皮需要比她现在摄入的水多40%的杯数。如果她目前每周喝15杯水，推荐的每周杯数是多少？


### Response:
 为了达到推荐的水分摄入量，哈皮每周需要多喝15杯 * 40/100 = <<15*40/100=6>>6杯水。
她每周应该喝的总杯数是15杯 + 6杯 = <<15+6=21>>21杯。