From June 15, 2007, 5 pairs of "EMUs" were added between Hangzhou and Shanghai, and now there are 8 pairs of EMUs between Shanghai and Hangzhou. Moreover, all EMUs will be put into operation at a faster speed, and the journey from Hangzhou East to Shanghai South will only take 75 minutes, compared with 80 minutes previously. Question: How much faster is the speed of the Shanghai-Hangzhou EMU now than before?
从2007年6月15日开始，杭州和上海之间新增了5对"动车组"，现在沪杭间的动车组已到8对．而且所有动车组将以更快的速度投入运行，杭州东至上海南全程只需75分钟，而原来需80分钟．问：现在沪杭间动车组的速度比原来快了几分之几？
<gadget id="calculator">1 / 75</gadget>
<output>1/75 = around 0.013333</output>

<gadget id="calculator">1 / 80</gadget>
<output>1/80 = around 0.0125</output>

<gadget id="calculator">(1/75) - (1/80)</gadget>
<output>1/1_200 = around 0.000833</output>

<gadget id="calculator">(1/1_200) / (1/80)</gadget>
<output>1/15 = around 0.066667</output>

<result>1/15 = around 0.066667</result>