This is the 10795th most frequent Russian word.
въехали
"Въехали" means "entered" or "moved into" (by vehicle or through crossing).
Here, "въехали" is used to describe entering and moving into a new dwelling.
Мы въехали в новый дом вчера.
We moved into a new house yesterday.
In this context, "въехал" metaphorically means to understand or comprehend something.
Он сразу въехал в суть вопроса.
He immediately grasped the essence of the question.
Here, "въехала" refers to a vehicle physically entering an area.