Two cars, A and B, drive opposite each other, and the speed ratio is 5:4. How much faster is A's speed than B's speed?
甲乙两车从两地相对开出，速度比是5：4，甲的速度比乙的速度快多少
<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>