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

### Instruction:
 特拉维斯和他的兄弟参加了一场万圣节糖果活动。他们总共收集了68块糖果。活动结束后，他们每人吃了4块糖果。还剩下多少块糖果？


### Response:
 活动结束后，他们总共吃了4 x 2 = <<4*2=8>>8块糖果。
所以，特拉维斯和他的兄弟还剩下68 - 8 = <<68-8=60>>60块糖果。