The perimeter of a rectangular vegetable garden is 56 meters, and the length is 4 meters more than the width. What is the area of the vegetable garden in square meters?
一个长方形菜园的周长是56米，长比宽多4米，这个菜园的面积是多少平方米？
<gadget id="calculator">56 / 2</gadget>
<output>28</output>

<gadget id="calculator">28 - 4</gadget>
<output>24</output>

<gadget id="calculator">24 / 2</gadget>
<output>12</output>

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

<gadget id="calculator">16 * 12</gadget>
<output>192</output>

<result>192</result>