A car travels an average of 48 kilometers per hour and reaches its destination in 5 hours. If you travel an average of 60 kilometers per hour, how many hours can you arrive in advance?
一辆车平均每小时行48千米，5小时到达目的地．如果平均每小时行60千米，可以提前几小时到达呢？
<gadget id="calculator">5 / 60</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">48 * (1/12)</gadget>
<output>4</output>

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

<result>1</result>