The playground is 120 meters long and 60 meters wide. How many meters is it for the students to run around the playground?
操场长120米，宽60米，同学们沿操场跑一圈是多少米．
<gadget id="calculator">120 + 60</gadget>
<output>180</output>

<gadget id="calculator">180 * 2</gadget>
<output>360</output>

<result>360</result>