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

### Instruction:
 杰克和吉尔是经常互相借钱的朋友。上周杰克向吉尔借了1200美元，并承诺以10%的利息偿还。杰克将偿还多少钱？


### Response:
 杰克将偿还1200 * (110/100) = 1320美元。