Think about it: if the greatest common factor of two numbers is 6, and the least common multiple is 120, and one of the numbers is known to be 30, what is the other number?
想一想：如果两个数的最大公因数是6，最小公倍数是120，已知其中一个数是30，则另一个数是多少．
<gadget id="calculator">2 * 2 * 2 * 3</gadget>
<output>24</output>

<result>24</result>