Three squares of the same size can be used to form a rectangle. If the side length of the square is (3/5) decimeters, what is the perimeter of the resulting rectangle?
用三个同样大小的正方形可以拼成一个长方形．如果正方形的边长是(3/5)分米，那么拼成的长方形的周长是多少分米？
<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<gadget id="calculator">12 - 4</gadget>
<output>8</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">8 * (3/5)</gadget>
<output>24/5 = around 4.8</output>

<result>24/5 = around 4.8</result>