It takes 5 minutes for a 400-meter-long train to pass a bridge. It is known that the train travels 10 meters per second. What is the total length of the bridge in meters?
一列长400米的火车通过一座桥用了5分钟，已知火车每秒行10米，这座桥全长多少米．
<gadget id="calculator">5 * 60 * 10</gadget>
<output>3_000</output>

<gadget id="calculator">3_000 - 400</gadget>
<output>2_600</output>

<result>2_600</result>