Let's calculate 2851 x 1523
2851 × 1523 = 1523 × (2851)
+ 1523 × 1 that results in 1523
+ 1523 × 50 that results in 76150
+ 1523 × 800 resulting in 1218400
+ 1523 × 2000 resulting in 3046000

= 4342073
