A rectangular vegetable field is 6 meters long and 4 meters wide. If one side is against a wall and the other three sides are surrounded by fences, how many meters should the fence be at least?
一块长方形的菜地，长6米，宽4米，如果一面靠墙，其他三面围篱笆，篱笆至少多少米？
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">6 + 8</gadget>
<output>14</output>

<result>14</result>