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

### Instruction:
 杰夫的游泳教练要求他在周末游泳98圈。周六，杰夫游了27圈。周日早上，他游了15圈，休息一下，然后在下午继续练习。杰夫休息时还剩下多少圈？


### Response:
 杰夫周六和周日早上游了27 + 15 = <<27+15=42>>42圈。
因此，杰夫休息时还剩下98 - 42 = <<98-42=56>>56圈。