According to 300/25=12, write (300*2)/(25*2)= directly.
根据300/25=12，直接写出(300*2)/(25*2)=多少．
<gadget id="calculator">300 * 2</gadget>
<output>600</output>

<gadget id="calculator">25 * 2</gadget>
<output>50</output>

<gadget id="calculator">600 / 50</gadget>
<output>12</output>

<result>12</result>