A rectangular vegetable field is 8 meters long and 6 meters wide. What is the perimeter of this rectangular vegetable field?
一个长方形的菜地，长为8米，宽为6米，这个长方形菜地的周长是多少米？
<gadget id="calculator">8 + 6</gadget>
<output>14</output>

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

<result>28</result>