The product of two factors is 16 times one of the factors and 28 times the other. What is the product of the two factors?
两个因数的积是其中一个因数的16倍，是另一个因数的28倍，两个因数的积是多少．
<gadget id="calculator">16 * 28</gadget>
<output>448</output>

<result>448</result>