Grandma wants to build a rectangular chicken coop with a length of 6 meters and a width of 4 meters on one side of the wall. Help grandma calculate how many meters the fence needs at least?
奶奶要在一面靠墙的地方围一个长6米，宽4米的长方形鸡舍，帮奶奶算一算至少需要篱笆多少米？
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

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

<result>14</result>