rectangular vegetable field is 28 meters long and half its width. What is the perimeter of this rectangular vegetable field in meters?
一块长方形菜地，长是28米，宽是长的一半，这个长方形菜地的周长是多少米？
<gadget id="calculator">28 / 2</gadget>
<output>14</output>

<gadget id="calculator">28 + 14</gadget>
<output>42</output>

<gadget id="calculator">42 * 2</gadget>
<output>84</output>

<result>84</result>