Xiaoren exercised in the morning and ran 6 laps along the square flower bed, running a total of 720 meters. What is the side length of this square flower bed?
小仁早晨锻炼，沿着正方形花坛跑了6圈，一共跑了720米，这个正方形花坛边长是多少？
<gadget id="calculator">720 / 6</gadget>
<output>120</output>

<gadget id="calculator">120 / 4</gadget>
<output>30</output>

<result>30</result>