Car A takes 5 hours to complete the same section of the road. Car B is 1 hour faster than car A. What is the speed of car A compared to car B?
行完同一段路，甲车要5小时，乙车比甲车快1小时，甲车的速度是乙车的多少．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/5) / (1/4)</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>