A car travels from A to B at a speed of 65 km/h. It takes 4 hours to return and 5 hours to return. What is the speed of the car?
一辆汽车从甲地开往乙地，去时的速度是65千米∕时，用了4小时，返回时用了5小时，这辆汽车返回的速度是多少？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">65 * (4/5)</gadget>
<output>52</output>

<result>52</result>