Divide a square colored flag with a side length of 6 decimeters into two rectangular colored flags of equal size, what is the area of each colored flag?
把一块边长6分米的正方形彩旗分割成大小相等的两块长方形彩旗，每块彩旗的面积是多少．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<result>18</result>