Dongdong went swimming. He swam 4 times in the swimming lane, a total of 200 meters. How long is the swimming lane in this swimming pool?
东东去游泳，他在泳道内游了4个来回，共200米，这个游泳池的泳道长多少米．
<gadget id="calculator">200 / 4 / 2</gadget>
<output>25</output>

<result>25</result>