We're going to solve 1599 multiplied by 3111
1599 × 3111 = 3111 × (1599)
+ 3111 × 9 that results in 27999
+ 3111 × 90 producing 279990
+ 3111 × 500 giving us 1555500
+ 3111 × 1000 what gives us 3111000

= 4974489
