Number A/Number B=20, (Number A/10)/(Number B*10)=how many
甲数/乙数=20，(甲数/10)/(乙数*10)=多少
<gadget id="calculator">40 / 10</gadget>
<output>4</output>

<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<gadget id="calculator">4 / 20</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>