Alright, let's work through 6434 times 8423 step by step
6434 × 8423 = 8423 × (6434)
+ 8423 × 4 which equals 33692
+ 8423 × 30 yielding 252690
+ 8423 × 400 producing 3369200
+ 8423 × 6000 that is equal 50538000

= 54193582
