A proportional formula can be formed by using 0.25, 0.75, 24 and more.
用0.25、0.75、24和多少可以组成一个比例式．
<gadget id="calculator">0.75 / 24</gadget>
<output>0.03125</output>

<gadget id="calculator">0.25 / 0.03125</gadget>
<output>8</output>

<result>8</result>