If the length of a rectangle is 24 meters and its width is three times its width, what is its area in square meters?
一个长方形的长是24米，是宽的3倍，它的面积是多少平方米．
<gadget id="calculator">24 / 3</gadget>
<output>8</output>

<gadget id="calculator">24 * 8</gadget>
<output>192</output>

<result>192</result>