The school playground is 150 meters long and 50 meters wide. We run 3 laps along the field, how many meters have we covered?
学校运动场长150米，宽50米．我们沿着运动场跑3圈，我们跑了多少米？
<gadget id="calculator">150 + 50</gadget>
<output>200</output>

<gadget id="calculator">200 * 2 * 3</gadget>
<output>1_200</output>

<result>1_200</result>