The number A is more than the number B (1/4), what percentage of the number B is the number A?
甲数比乙数多(1/4)，问乙数是甲数的百分之几？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">1 / (5/4)</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>