Alright, let's work through 1081 times 2643 step by step
1081 × 2643 = 2643 × (1081)
+ 2643 × 1 producing 2643
+ 2643 × 80 yielding 211440
+ 2643 × 000 that results in 0
+ 2643 × 1000 that equals 2643000

= 2857083
