Alright, let's work through 2049 times 1990 step by step
2049 × 1990 = 1990 × (2049)
+ 1990 × 9 resulting in 17910
+ 1990 × 40 producing 79600
+ 1990 × 000 yielding 0
+ 1990 × 2000 that results in 3980000

= 4077510
