The original maximum speed of the Wuhan-Guangzhou high-speed rail was 350 km/h. Since July 1, 2011, the maximum speed of the high-speed rail has dropped (1/7). What is the current top speed of the Wuhan-Guangzhou high-speed rail?
武广高铁原来最高速度为350千米/时，从2011年7月1日起，高铁最高速度下降了(1/7)．武广高铁现在最高时速是多少？
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 - (1/7)</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">350 * (6/7)</gadget>
<output>300</output>

<result>300</result>