If the side length of the square is reduced to the original (1/3), its area will be that much.
正方形的边长缩小到原来的(1/3)，它的面积就多少．
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<result>1/9 = around 0.111111</result>