If the ratio of number A to number B is 5:4, then how much more number A is than number B.
甲数与乙数的比为5：4，则甲数比乙数多多少．
<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>