identical squares form a rectangle. The sum of these 5 squares is 125 square centimeters. Find the perimeter of the formed rectangle in centimeters.
5个同样的正方形组成1个长方形，这5个正方形之和是125平方厘米，求组成的长方形的周长是多少厘米．
<gadget id="calculator">125 / 5 / 5</gadget>
<output>5</output>

<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<gadget id="calculator">25 + 5</gadget>
<output>30</output>

<gadget id="calculator">30 * 2</gadget>
<output>60</output>

<result>60</result>