The title of the middle school attached to the National People's Congress is so simple ... The landlord exaggerates. And there is something wrong with the calculation of the above two layers. 8*9*5*7* 1 1=27720.

And you don't have to multiply by the smallest number 12 to know that it is 22.

Very simply, as long as we know that it is 13, we can know that there can be no continuous even multiplication above 26, and all prime factors less than 13 must exist in the continuous even multiplication. Otherwise, it will become the smallest prime number. Since it is less than 26, and all prime factors must exist, and it is even, 1 1 must exist, we immediately know that it is 22. Don't bother to take a common multiple, and multiply it or something, please. But if the topic requires construction, we all know that the answer is 22, and a multiplication will come out.