What is the sum of 8.5 plus the product of two 2.5?
8.5加上2个2.5的积，和是多少？
<gadget id="calculator">2.5 * 2</gadget>
<output>5</output>

<gadget id="calculator">8.5 + 5</gadget>
<output>13.5</output>

<result>13.5</result>