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一列火车长640米,从路边的一棵大树旁通过用了16秒,以同样的速度通过一座大桥,从车头上桥到车尾离桥一共用了58秒。这座大桥长多少米?
A train 640 meters long, spent 16 seconds by a tree by the side of the road, passing through a bridge at the same speed, sharing 58 seconds from the bridge to the rear of the bridge. How long is this bridge?