Ding Ding went swimming in the swimming pool. He swam 3 back and forth in the swimming lane and swam 600 meters in total. How long is the swimming lane in this swimming pool?
丁丁去游泳池游泳，他在泳道内游了3个来回，共游了600米，这个游泳池的泳道有多长？
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">600 / 6</gadget>
<output>100</output>

<result>100</result>