Alright, let's work through 2083 times 6443 step by step
2083 × 6443 = 6443 × (2083)
+ 6443 × 3 what gives us 19329
+ 6443 × 80 producing 515440
+ 6443 × 000 yielding 0
+ 6443 × 2000 yielding 12886000

= 13420769
