The ratio of number A to number B is 5:8, how much less number A is than number B
甲数与乙数的比是5：8，则甲数比乙数少多少
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>