Complex sentence: The seven clients rented a study room and paid Ažbe for fixing their homework, two months later, an inflow of new clients allowed Ažbe to rent his own premises, starting the Ažbe School.
Split into simpler sentences: The seven clients rented a study room and paid Ažbe for fixing their homework. Two months later, an inflow of new clients allowed Ažbe to rent his own premises, starting the Ažbe School.