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

### Instruction:
 一个店主在四月份订购了20箱苏打水，五月份订购了30箱。每箱有20瓶。店主在四月和五月一共订购了多少瓶苏打水？


### Response:
 四月 = 20箱 * 20瓶 = <<20*20=400>>400瓶
五月 = 30箱 * 20瓶 = <<30*20=600>>600瓶
四月 + 五月 = 400 + 600 = <<400+600=1000>>1000瓶