A maglev train travels at 300 kilometers per hour, which is faster (5/7) than an ordinary passenger car. How many kilometers does this ordinary passenger car travel per hour?
某磁悬浮列车时速为300千米，比一列普通客车的速度快(5/7)，这列普通客车每小时行驶多少千米？
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">1 + (5/7)</gadget>
<output>12/7 = around 1.714286</output>

<gadget id="calculator">300 / (12/7)</gadget>
<output>175</output>

<result>175</result>