The product of two numbers is 4.5. If one factor is multiplied by 10, the other factor is also multiplied by 10. What is the product?
两个数的积是4.5，如果一个因数扩大10倍，另一个因数也扩大10倍，积是多少．
<gadget id="calculator">4.5 * 100</gadget>
<output>450</output>

<result>450</result>