It is known that the greatest common factor of a certain number and 24 is 6, and the least common multiple is 72. What is this number?
已知某数与24的最大公因数为6，最小公倍数为72，这个数是多少．
<gadget id="calculator">6 / 24</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">72 * (1/4)</gadget>
<output>18</output>

<result>18</result>