Alright, let's work through 2452 times 7821 step by step
2452 × 7821 = 7821 × (2452)
+ 7821 × 2 producing 15642
+ 7821 × 50 producing 391050
+ 7821 × 400 resulting in 3128400
+ 7821 × 2000 giving us 15642000

= 19177092
