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

### Instruction:
 一个人以12%的利率借了一笔钱一年。如果总利息是1500美元，原始借款金额是多少？


### Response:
 假设X是借款金额。利息是X * 0.12 = 1500美元。
所以借款金额是X = 1500美元 / 0.12 = 12500美元。