The product of two numbers is 0.618. If the first factor is enlarged by 500 times and the second factor is reduced by 10 times, what is the product?
两个数的积是0.618，若第一个因数扩大500倍，第二个因数缩小10倍，这时积是多少．
<gadget id="calculator">500 / 10</gadget>
<output>50</output>

<gadget id="calculator">0.618 * 50</gadget>
<output>30.9</output>

<result>30.9</result>