Dad swam 4 back and forth in the swimming pool, a total of 480 meters, how long is the lane of this swimming pool?
爸爸在游泳池内游了4个来回，共游480米，这个游泳池泳道有多长？
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">480 / 8</gadget>
<output>60</output>

<result>60</result>