Aunt Wang used a wall to enclose a chicken farm with a length of 10 meters and a width of 6 meters. If it is surrounded by a bamboo fence, how many meters should the bamboo fence be?
王大妈利用一面墙围了一个长10米，宽6米的养鸡场，如果用竹篱笆围，至少要竹篱笆多少米．
<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">12 + 10</gadget>
<output>22</output>

<result>22</result>