We're going to solve 8457 multiplied by 1643
8457 × 1643 = 1643 × (8457)
+ 1643 × 7 yielding 11501
+ 1643 × 50 which equals 82150
+ 1643 × 400 resulting in 657200
+ 1643 × 8000 that is equal 13144000

= 13894851
