The product of two numbers is 800, if one factor is enlarged by 3 times and the other factor remains unchanged, what is the product.
两个数的积是800，如果一个因数扩大3倍，另一个因数不变，则积是多少．
<gadget id="calculator">800 * 3</gadget>
<output>2_400</output>

<result>2_400</result>