Grandpa Li surrounded a sheepfold with 24 1-meter-long fences. If the sheepfold is 8 meters long, how many square meters should it be?
李爷爷用24块1米长的栅栏围成了一个羊圈．如果围成的羊圈长8米，面积应该是多少平方米？
<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<gadget id="calculator">12 - 8</gadget>
<output>4</output>

<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<result>32</result>