Using the nine digits from 1 to 9 can form 362880 nine-digit numbers without repeating digits. So, what is the greatest common divisor of these numbers?
用1～9这九个数码可以组成362880个没有重复数字的九位数．那么，这些数的最大公约数是多少．
<gadget id="calculator">987_654_321 - 987_654_312</gadget>
<output>9</output>

<result>9</result>