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

### Instruction:
 伊凡的狗重63磅；它的重量是伊凡的狗的7倍。两只狗一起重多少磅？


### Response:
 伊凡的狗重63/7 = <<63/7=9>>9磅。
因此，两只狗一共重63 + 9 = <<63+9=72>>72磅。