The surface meaning of "The Road Not Taken" starts with a person facing a choice to select one way. He chooses and makes a difference at the end and wishes to return to the point where he chose to check out where the other path led.
Explanation:
Robert Frost in this poem talks about the path of life. At a juncture, he had to choose between two paths. One path looked like people had travelled on it and the other looked abandoned or not used often so he had described it as grassy and with no leaves trodden black. Here, the two paths stand for two choices in life's path. He chose the road less travelled. This means that he made an unconventional choice which led to a different direction than what most people did. This choice expressed individuality and leadership. By choosing the road that was not taken he made a huge difference. The wood represented life and the divergent paths were the curves thrown in the journey where he had to take an important decision about his life.
The open window and the landlady both show the creepy experience by the main character. Both add to the experience with imagery and (should I continue?)
If there are 260 total passengers and four railcars it would be 260 divided by 4 because for it to be passengers per railcar you are trying to find the number of people for ONE railcar.