The length of a rectangle is 24 meters, which is 4 meters more than twice the width. What is the area of the rectangle?
一个长方形长24米，比宽的2倍多4米，这个长方形的面积是多少？
<gadget id="calculator">24 - 4</gadget>
<output>20</output>

<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">24 * 10</gadget>
<output>240</output>

<result>240</result>