Number A/Number B=2.5, if Number A is enlarged by 4 times and Number B is reduced by 2 times, what is the product
甲数/乙数=2.5，如果甲数扩大4倍，乙数缩小它的2倍，积是多少
<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<gadget id="calculator">2.5 * 8</gadget>
<output>20</output>

<result>20</result>