Alright, let's work through 2123 times 2021 step by step
2123 × 2021 = 2021 × (2123)
+ 2021 × 3 resulting in 6063
+ 2021 × 20 resulting in 40420
+ 2021 × 100 which equals 202100
+ 2021 × 2000 producing 4042000

= 4290583
