The two outer terms are 24 and 5, and the two inner terms are X and 15. Find the other inner term.
两个外项分别为24和5，两个内项为X和15，求另一个内项．
<gadget id="calculator">5 / 15</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">24 * (1/3)</gadget>
<output>8</output>

<result>8</result>