The playground in our school is 115 meters long and 90 meters wide. What is the circumference in meters?
我们学校的操场长是115米，宽是90米，周长是多少米？
<gadget id="calculator">115 + 90</gadget>
<output>205</output>

<gadget id="calculator">205 * 2</gadget>
<output>410</output>

<result>410</result>