The ratio of number A to number B is 4:5, so how much more number B is than number A
甲数和乙数的比是4：5，那么乙数比甲数多多少
<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>