A car travels from A to B at 60 kilometers per hour and arrives in 5 hours. When returning, it travels 75 kilometers per hour. At this speed, how many hours does it take for the car to return from point B to point A?
一辆汽车从甲地开往乙地，每小时行60千米，5小时到达．返回时每小时行75千米，照这样的速度，这辆汽车从乙地返回甲地需要几小时？
<gadget id="calculator">5 / 75</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">60 * (1/15)</gadget>
<output>4</output>

<result>4</result>