It used to take about 12 hours to travel from Beijing to Shanghai by train. After the opening of the high-speed railway, the time has been shortened (3/5). How long does it take to take the high-speed train from Beijing to Shanghai?
从北京到上海原来乘火车大约需要12小时．高速铁路开通后时间缩短了(3/5)．从北京到上海乘坐高铁大约需要多少小时？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">12 * (2/5)</gadget>
<output>24/5 = around 4.8</output>

<result>24/5 = around 4.8</result>