Divide a rectangular piece of paper into 9 parts on average, 5 of which are ((())/(())) of this piece of paper.
把一张长方形纸片平均分成9份，其中的5份是这张纸片的((())/(()))．
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<result>5/9 = around 0.555556</result>