The length of a rectangle is 12 decimeters, which is 4 decimeters more than the width, what is the area of the rectangle in square decimeters?
一个长方形的长是12分米，比宽多4分米，这个长方形的面积是多少平方分米．
<gadget id="calculator">12 - 4</gadget>
<output>8</output>

<gadget id="calculator">12 * 8</gadget>
<output>96</output>

<result>96</result>