Grandpa Wang wants to surround a rectangular vegetable garden with a length of 8 meters and a width of 5 meters. If one side is against a wall, what is the minimum length of the fence? How much rice
王爷爷要围一个长8米，宽5米的长方形菜园，如果一面靠墙，篱笆至少需要多长？多少米
<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">8 + 10</gadget>
<output>18</output>

<result>18</result>