A rectangular vegetable field is 16 meters long and half its width. If a fence is built around the vegetable field, what is the minimum length of the fence?
一个长方形菜地，长16米，宽是长的一半，如果在菜地四周围上篱笆，篱笆至少有多长？
<gadget id="calculator">16 / 2</gadget>
<output>8</output>

<gadget id="calculator">16 + 8</gadget>
<output>24</output>

<gadget id="calculator">24 * 2</gadget>
<output>48</output>

<result>48</result>