The product of two factors is 2.6. If one of the factors is multiplied by 2 and the other is multiplied by 5, what is the product?
两个因数的积是2.6，若将其中一个因数扩大2倍，另一个因数扩大5倍，那么积是多少．
<gadget id="calculator">2.6 * 2 * 5</gadget>
<output>26</output>

<result>26</result>