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

### Instruction:
 唐娜把她的披萨切成12片，午餐时吃了一半。晚餐时，她吃了剩下的披萨的1/3。唐娜明天的午餐还剩下多少片？


### Response:
 午餐后，她还剩下12/2 = <<12/2=6>>6片。
晚餐时，她吃了1/3 * 6 = <<1/3*6=2>>2片。
她还剩下6 - 2 = <<6-2=4>>4片可以用来明天的午餐。