A rectangle has a width of 8 cm, and its length is 3 times more than twice its width. What is the perimeter of this rectangle?
一个长方形，宽是8厘米，长比宽的2倍还多3，这个长方形的周长是多少．
<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<gadget id="calculator">16 + 3 + 8</gadget>
<output>27</output>

<gadget id="calculator">27 * 2</gadget>
<output>54</output>

<result>54</result>