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

### Instruction:
 如果你买一打甜甜圈，花费8美元；但如果你买2打，花费14美元。买3组2打甜甜圈比买6组1打甜甜圈能省多少钱？


### Response:
 6组1打甜甜圈花费8美元 x 6 = 48美元。
3组2打甜甜圈花费14美元 x 3 = 42美元。
因此，你可以省下48美元 - 42美元 = 6美元。