The length of a rectangle is 7.6 cm and the width is 5.4 cm. What is the perimeter of the rectangle in cm?
一个长形的长是7.6厘米，宽是5.4厘米，这个长方形的周长是多少厘米？
<gadget id="calculator">7.6 + 5.4</gadget>
<output>13</output>

<gadget id="calculator">13 * 2</gadget>
<output>26</output>

<result>26</result>