A circle of the playground is 200 meters long. Li Ming ran 3 laps around the playground. Zhao Gang ran twice as fast as Li Ming. How many meters did Zhao Gang run?
操场一圈长200米，李明围着操场跑了3圈，赵刚跑的是李明的2倍，赵刚跑了多少米？
<gadget id="calculator">200 * 3 * 2</gadget>
<output>1_200</output>

<result>1_200</result>