It takes 8 hours for car A to go from place A to place B, and 10 hours for car B to travel. How much slower is car B than car A?
从A地到B地甲车要行8小时，乙车要行10小时，乙车比甲车慢多少．
<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) / (1/8)</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>