The ratio of 18 to 12 is equal to the ratio of 24 to x.
18和12的比等于24和x的比．
<gadget id="calculator">18 / 12</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">24 / (3/2)</gadget>
<output>16</output>

<result>16</result>