A car travels from place A to place B for 8 hours, but the return speed is only 80% of the going time. How many hours does it take to get from point B to point A?
一辆轿车从甲地去乙地行了8小时，返回是速度只有去时的80%．从乙地返回到甲地需要多少小时？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">8 / (4/5)</gadget>
<output>10</output>

<result>10</result>