Answer:
43545600
Step-by-step explanation:
5! = 5 × 4 × 3 × 2 × 1 = 120
9! = 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 = 362880
So 5! × 9! = 120 × 362880 = 43545600
