This is the 199th most frequent Azerbaijani word.
vasitəsilə
"Through" or "by means of."
The word 'vasitəsilə' is used here to imply the medium or method through which an action (solving the problem) was performed.
Biz bu problemi vasitəsilə həll etdik.
We solved this problem through it.
In this sentence, 'vasitəsilə' illustrates the means (books) through which the action of learning is achieved.
O, hər şeyi kitablar vasitəsilə öyrənir.
He learns everything through books.
Here, 'vasitəsilə' relates to the process or avenue (discussion) used to accomplish the resolution.