train passes the Nanjing Yangtze River Bridge. The bridge is 6,700 meters long. The train is 140 meters long. The train travels 400 meters per minute. How many minutes does it take for the train to pass the Yangtze River Bridge?
一列火车经过南京长江大桥，大桥长6700米，这列火车长140米，火车每分钟行400米，这列火车通过长江大桥需要多少分钟？
<gadget id="calculator">6_700 + 140</gadget>
<output>6_840</output>

<gadget id="calculator">6_840 / 400</gadget>
<output>171/10 = around 17.1</output>

<result>171/10 = around 17.1</result>