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

### Instruction:
 汤姆将一个250磅的沙袋填充到80%满。但是他使用的填充材料比沙子重40%。这个袋子重多少磅？


### Response:
 装满沙子的重量=250*0.8=<<250*0.8=200>>200磅
填充材料的重量=200*1.4=<<200*1.4=280>>280磅
280磅