The number A is more than the number B (4/5), and the number B is less than the number A ((())/(())).
甲数比乙数多(4/5)，乙数比甲数少((())/(()))．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 + (4/5)</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">(4/5) / (9/5)</gadget>
<output>4/9 = around 0.444444</output>

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