A rectangle is 6 decimeters wide and its length is 2 decimeters greater than its width. What is the perimeter of this rectangle?
一个长方形宽6分米，长比宽多2分米，这个长方形的周长是多少分米．
<gadget id="calculator">6 + 6 + 2</gadget>
<output>14</output>

<gadget id="calculator">14 * 2</gadget>
<output>28</output>

<result>28</result>