Uncle Li used a fence to form a rectangular vegetable field with a length of 35 meters and a width of 12 meters (one side is against the wall). How many meters of fence did he use at least?
李大爷用篱笆围成一个长35米，宽12米的长方形菜地(一面靠墙)，他至少用了多少米的篱笆？
<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<gadget id="calculator">35 + 24</gadget>
<output>59</output>

<result>59</result>