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

### Instruction:
 她周二卖的盒子数是周三的两倍，而她周三卖的盒子数是周四的两倍。如果金在周四卖了1200盒杯子蛋糕，那么她在周二卖了多少盒？


### Response:
 金在周三卖了1200*2 = <<1200*2=2400>>2400盒杯子蛋糕。
金在周二卖了2400*2 = <<2400*2=4800>>4800盒杯子蛋糕。