The product of two factors is 310, if one factor remains unchanged and the other factor is multiplied by 3, what is the product at this time?
两个因数的积是310，如果一个因数不变，另个因数扩大3倍，这时它的积是多少．
<gadget id="calculator">310 * 3</gadget>
<output>930</output>

<result>930</result>