The two internal terms of the ratio are 3 and 1.2 respectively, and the two external terms are x and 24 respectively. Find x?
比例的两个内项分别是3和1.2，两个外项分别为x和24，求x？
<gadget id="calculator">3 * 1.2</gadget>
<output>3.6</output>

<gadget id="calculator">3.6 / 24</gadget>
<output>0.15</output>

<result>0.15</result>