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

### Instruction:
 在一个游乐园里，有84个人在排队等候乘坐过山车。 过山车有7辆车，每辆车可以坐2个人。 过山车操作员需要运行多少次过山车才能让排队的每个人都轮流乘坐？


### Response:
 每次运行可以容纳7 * 2 = <<7*2=14>>14个人。
过山车需要运行84 / 14 = <<84/14=6>>6次。