3. Three people, A, B, and C, take the elevator from the 1st floor to floors 3 to 7 of the mall. A maximum of 2 people can get off at each floor. The number of ways they can get off the elevator is
$\qquad$ kinds.
If there are 2 people getting off at one floor, then the number of ways to get off the elevator is $C_{3}^{2} \cdot A_{5}^{2}=60$; if no floor has 2 people getting off, then the number of ways to get off the elevator is $A_{5}^{3}=60$. Therefore, the total number of ways to get off the elevator is 120.