The product of two factors is 5.4, if one of the factors is expanded to 2 times, and the other number is expanded to 5 times, then the product is increased by how much.
两个因数的积是5.4，若将其中一个因数扩大到它的2倍，另一个数扩大到它的5倍，那么积比原来增加了多少．
<gadget id="calculator">5.4 * 2 * 5</gadget>
<output>54</output>

<gadget id="calculator">54 - 5.4</gadget>
<output>48.6</output>

<result>48.6</result>