The product of two factors is 4.5, one of the factors is multiplied by 10, and the other factor remains unchanged, what is the product?
两个因数的积是4.5，其中一个因数扩大10倍，另一个因数不变，则积是多少．
<gadget id="calculator">4.5 * 10</gadget>
<output>45</output>

<result>45</result>