(1/4) of number A is equal to (1/5) of number B, how much more number B is than number A.
甲数的(1/4)等于乙数的(1/5)，乙数比甲数多多少．
<gadget id="calculator">5 - 4</gadget>
<output>1</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>