A wire can just form a rectangle with a length of 8 decimeters and a width of 6 decimeters. How long is this wire?
一根铁丝刚好可以围成一个长是8分米、宽是6分米的长方形，这根铁丝有多长？
<gadget id="calculator">8 + 6</gadget>
<output>14</output>

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

<result>28</result>