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

### Instruction:
 拉拉正在用四个烤盘烤饼干。她在一个烤盘上放了五行饼干，每行有六个饼干。她一共要烤多少个饼干？


### Response:
 如果拉拉在一个烤盘上能烤5行 x 6个 = <<5*6=30>>30个饼干，那么她一共要烤30个 x 4个烤盘 = <<30*4=120>>120个饼干。