Let's calculate 4329 x 2821
4329 × 2821 = 2821 × (4329)
+ 2821 × 9 resulting in 25389
+ 2821 × 20 that results in 56420
+ 2821 × 300 giving us 846300
+ 2821 × 4000 that results in 11284000

= 12212109
