The product of two factors is 10. If one factor is enlarged by 8 times and the other factor is reduced by 4 times, what is the product?
两个因数的积是10，如果一个因数扩大8倍，另一个因数缩小4倍，这时积是多少．
<gadget id="calculator">8 / 4</gadget>
<output>2</output>

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

<result>20</result>