The length of a piece of rectangular paper is (9/4) decimeters, and the width is (2/3). Cut a largest square out of this rectangle. What is the area of this square?
一张长方形纸的长是(9/4)分米，宽是长的(2/3)，用这个长方形剪一个最大的正方形，这个正方形的面积是多少．
<gadget id="calculator">9 / 4</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(9/4) * (2/3) * (9/4) * (2/3)</gadget>
<output>9/4 = around 2.25</output>

<result>9/4 = around 2.25</result>