This is the 12206th most frequent Russian word.
иностранном
The word "иностранном" means "foreign" (in the prepositional case).
Here, "иностранном" is in the prepositional case, describing the word "университете" (university) to indicate that it is a foreign university.
Я учусь в иностранном университете.
I study at a foreign university.
Here, "иностранном" modifies the word "языке" (language) and is in the prepositional case to express the idea of speaking in a foreign language.
На иностранном языке бывает сложно говорить.
It can be difficult to speak in a foreign language.
Here, "иностранном" is used in the prepositional case to qualify "бумаге" (paper), emphasizing that the paper has foreign origins.