A rectangle has a width of 6 decimeters and a length of 8 decimeters, what is its perimeter?
一个长方形的宽是6分米，长是8分米，它的周长是多少分米？
<gadget id="calculator">8 + 6</gadget>
<output>14</output>

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

<result>28</result>