From A to B, it takes 8 hours for a passenger car and 10 hours for a truck. How much faster is the speed of the passenger car than the truck?
从甲地到乙地，客车要用8小时，货车要用10小时，客车速度比货车速度快多少
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/8) - (1/10)</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">(1/40) / (1/10)</gadget>
<output>1/4 = around 0.25</output>

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