Alright, let's work through 7812 times 2821 step by step
7812 × 2821 = 2821 × (7812)
+ 2821 × 2 yielding 5642
+ 2821 × 10 producing 28210
+ 2821 × 800 that results in 2256800
+ 2821 × 7000 producing 19747000

= 22037652
