What is the area of the figure obtained by reducing the square with a side length of 6 cm to 1:3?
把边长6cm的正方形按1：3缩小，得到的图形的面积是多少．
<gadget id="calculator">6 / 3</gadget>
<output>2</output>

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

<result>4</result>