Xiao Wang, Xiao Zhang and Xiao Li took the same train. Xiao Wang walked from the rear to the front of the train. At a certain moment in the middle, he saw a bridge. After 30 seconds, the bridge disappeared, and Xiao Zhang walked from the front to the rear of the train. At a certain moment in the middle, I saw a cave. After 54 seconds, the cave disappeared. It is known that Xiao Zhang’s speed is twice as fast as Xiao Wang’s, and the length of the cave is 1.5 times the length of the bridge. Then Xiao Li sat in the seat How many seconds does it take to see a station that is 70% longer than the cave passing by?
小王，小张和小李乘坐同一列火车，小王从车尾走向车头，中间某时刻，看到一座桥，过了30秒，这座桥消失了，小张从车头走向车尾．中间某时刻，看到一个山洞，过了54秒，这个山洞消失了，已知小张的速度比小王的速度快一倍，山洞的长是桥长的1.5倍，那么小李坐在座位上看一个比山洞长70%的车站从身边经过，需要多少秒？
<gadget id="calculator">63 / 9</gadget>
<output>7</output>

<gadget id="calculator">459 / 7</gadget>
<output>459/7 = around 65.571429</output>

<result>459/7 = around 65.571429</result>