In the mathematics activity class, Xiaoxiao used a 24 cm long rope to form a rectangle, the length of which is 3 times the width, what is the area of this rectangle in square centimeters?
数学活动课上，笑笑用24厘米长的绳子围成一个长方形，其中长是宽的3倍，这个长方形的面积是多少平方厘米？
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">24 / 2 / 4</gadget>
<output>3</output>

<gadget id="calculator">3 * 3 * 3</gadget>
<output>27</output>

<result>27</result>