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

### Instruction:
 斯泰西为办公室买了两包打印纸。每包有240张纸。她的办公室每天打印80页单面文件。这些打印纸能够供办公室使用多少天？


### Response:
 每包打印纸有240张，所以两包一共有2*240 = <<2*240=480>>480张纸。
办公室每天打印80页，所以这些打印纸能够供办公室使用480/80 = <<480/80=6>>6天。