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

### Instruction:
 一包纸有500张，售价27美元。一个办公室需要5000张纸。购买所需的纸张将花费多少钱？


### Response:
 一个办公室需要购买10包纸，以获得5000张纸。
所以，购买所需的纸张将花费27美元 x 10 = $<<27*10=270>>270。