25*34, if 25 is expanded to twice its size, but the product remains unchanged, then 34 will be reduced to its size
25*34，若把25扩大到它的2倍，而积不变，那么34就要缩小到它的多少
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>