A square is divided into 5 equal rectangles. The perimeter of each rectangle is 60 cm. What is the perimeter of the square in cm?
一个正方形，被分成5个相等的长方形，每个长方形的周长是60厘米，正方形的周长是多少厘米．
<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">60 * (5/12)</gadget>
<output>25</output>

<gadget id="calculator">25 * 4</gadget>
<output>100</output>

<result>100</result>