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

### Instruction:
 奥利维亚用4个25美分买薯片，用12个25美分买汽水。她总共支付多少美元？


### Response:
 4个25美分等于4 / 4 = $<<4/4=1>>1。
12个25美分等于12 / 4 = $<<12/4=3>>3。
总金额为1 + 3 = $<<1+3=4>>4美元。