It used to take about 12 hours by train from Beijing to Shanghai, but after the opening of the high-speed railway, the time has been shortened (2/3).
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(2/3)，现在从北京到上海乘坐高铁大约需要多少小时．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">12 * (1/3)</gadget>
<output>4</output>

<result>4</result>