The product of two factors is 3.6, if one factor is multiplied by 2 and the other factor is multiplied by 10, how many times will the product be multiplied?
两个因数的积是3.6，如果一个因数扩大2倍，另一个因数扩大10倍，积扩大多少倍．
<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<result>20</result>