A rectangular frame is made with a piece of iron wire. Its length is 125 cm and its width is 75 cm. If this wire is made into a square frame, what is the length of its side in cm?
用一根铁丝做成一个长方形框架，它的长是125厘米，宽是75厘米，如果把这根铁丝做成一个正方形框架，它的边长是多少厘米？
<gadget id="calculator">125 + 75</gadget>
<output>200</output>

<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">200 * (1/2)</gadget>
<output>100</output>

<result>100</result>