Xiao Ding observed a train running at the same speed, and it took 10 seconds to pass him, and 37 seconds to pass a 486-meter-long iron bridge. How long is this train?
小丁观察一列保持相同速度行驶的火车，经过他的身边用了10秒钟，通过一座长486米的铁桥用了37秒．这列火车长多少米．
<gadget id="calculator">37 - 10</gadget>
<output>27</output>

<gadget id="calculator">486 / 27</gadget>
<output>18</output>

<gadget id="calculator">18 * 10</gadget>
<output>180</output>

<result>180</result>