3 largest and equal squares are welded with a 240 cm long iron wire, what is the side length of the square in cm?
用一根240厘米长的铁丝焊接成3个最大的且相等的正方形，正方形的边长是多少厘米？
<gadget id="calculator">240 / 3 / 4</gadget>
<output>20</output>

<result>20</result>