From A to B, car A travels for 4 hours, and car B travels for 5 hours. The speed of car A is the speed of car B.
从A地到B地，甲车行4小时，乙车行5小时，甲车的速度是乙车速度的多少．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/4) / (1/5)</gadget>
<output>5/4 = around 1.25</output>

<result>5/4 = around 1.25</result>