A rectangular vegetable field is 4 meters wide and 3 times as long as it is wide. What is the perimeter in meters?
一块长方形菜地，宽是4米，长是宽的3倍，周长是多少米？
<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<gadget id="calculator">12 + 4</gadget>
<output>16</output>

<gadget id="calculator">16 * 2</gadget>
<output>32</output>

<result>32</result>