Alright, let's work through 2081 times 1866 step by step
2081 × 1866 = 1866 × (2081)
+ 1866 × 1 what gives us 1866
+ 1866 × 80 which equals 149280
+ 1866 × 000 producing 0
+ 1866 × 2000 which equals 3732000

= 3883146
