Mathematics · Set Theory and Venn Diagrams

For departmental promotions, a three-stage evaluation process was conducted for 120 employees. While 40 employees cleared the First stage, 39 cleared the Second stage, and 48 cleared the Third stage. If 9 employees cleared the first two stages only, 19 failed to clear the first two stages only, and 19 cleared all three stages, how many employees cleared at least two stages?