The two outer terms are 24 and 18, and the two inner terms are x and 36.
两个外项是24和18，两个内项是x和36．
<gadget id="calculator">24 * 18</gadget>
<output>432</output>

<gadget id="calculator">432 / 36</gadget>
<output>12</output>

<result>12</result>