If a square glass with a side length of 4 decimeters is cut into two rectangles of equal size, what is the area of each rectangle?
把一块边长为4分米的正方形玻璃，割成大小相等的两块长方形，每块长方形的面积是多少平方分米？
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<result>8</result>