There is a rectangular wheat field whose width is 8 meters and whose length is three times the width. What is the circumference of this wheat field in meters?
有一块长方形的小麦地，宽是8米，长是宽的3倍，这块小麦地的周长是多少米？
<gadget id="calculator">8 * 3</gadget>
<output>24</output>

<gadget id="calculator">24 + 8</gadget>
<output>32</output>

<gadget id="calculator">32 * 2</gadget>
<output>64</output>

<result>64</result>