Alright, let's work through 4451 times 2643 step by step
4451 × 2643 = 2643 × (4451)
+ 2643 × 1 producing 2643
+ 2643 × 50 giving us 132150
+ 2643 × 400 producing 1057200
+ 2643 × 4000 resulting in 10572000

= 11763993
