We're going to solve 2557 multiplied by 3997
2557 × 3997 = 3997 × (2557)
+ 3997 × 7 producing 27979
+ 3997 × 50 what gives us 199850
+ 3997 × 500 giving us 1998500
+ 3997 × 2000 giving us 7994000

= 10220329
