Let's calculate 1283 x 4012
1283 × 4012 = 4012 × (1283)
+ 4012 × 3 that results in 12036
+ 4012 × 80 yielding 320960
+ 4012 × 200 that results in 802400
+ 4012 × 1000 that results in 4012000

= 5147396
