2.5*0.2/2.5*0.2=how much
2.5*0.2/2.5*0.2=多少
<gadget id="calculator">0.2 / 2.5</gadget>
<output>0.08</output>

<gadget id="calculator">2.5 * 0.08 * 0.2</gadget>
<output>0.04</output>

<result>0.04</result>