Let's calculate 3688 x 2821
3688 × 2821 = 2821 × (3688)
+ 2821 × 8 that results in 22568
+ 2821 × 80 resulting in 225680
+ 2821 × 600 that is equal 1692600
+ 2821 × 3000 producing 8463000

= 10403848
