The product of two factors is 5 times one factor and 8 times the other factor. What is the product of these two factors?
两个因数的积是其中一个因数的5倍，是另一个因数的8倍，这两个因数的积是多少．
<gadget id="calculator">5 * 8</gadget>
<output>40</output>

<result>40</result>