The number of A is 1(1/4) times of the number of B, and the number of B is less than the number of A ((())/(())).
甲数是乙数的1(1/4)倍，乙数比甲数少((())/(()))．
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(5/4) - 1</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) / (5/4)</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>