The product of multiplying two factors is 357, one factor remains unchanged, and the other factor is multiplied by 4, what is the product?
两个因数相乘的积是357，一个因数不变，另一个因数乘4，积是多少．
<gadget id="calculator">357 * 4</gadget>
<output>1_428</output>

<result>1_428</result>