Fill in a fraction with a single-digit denominator in the brackets, (3/4)<how many<(4/5).
在括号里填上一个分母是一位数的分数，(3/4)＜多少＜(4/5)．
<gadget id="calculator">7 / 9</gadget>
<output>7/9 = around 0.777778</output>

<result>7/9 = around 0.777778</result>