Use 4 square meters of red paper to make 9 small flags of the same size, each small red flag uses ((())/(())) of this paper, how many square meters of paper is used for each small red flag.
用4平方米的红纸做同样大小的9面小旗，每面小红旗用这张纸的((())/(()))，每面小红旗用纸多少平方米．
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 / (1/9)</gadget>
<output>9</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<result>4/9 = around 0.444444</result>