What is the product of the sum of 25 and 16 multiplied by their difference?
25与16的和，乘以它们的差，积是多少？
<gadget id="calculator">25 + 16</gadget>
<output>41</output>

<gadget id="calculator">25 - 16</gadget>
<output>9</output>

<gadget id="calculator">41 * 9</gadget>
<output>369</output>

<result>369</result>