The product of two factors is 480. If one factor is doubled and the other is doubled, what is the product of them?
两个因数的积是480，如果一个因数扩大2倍，另一个因数扩大2倍，那么它们的积多少．
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<result>4</result>