We're going to solve 1999 multiplied by 4191
1999 × 4191 = 4191 × (1999)
+ 4191 × 9 producing 37719
+ 4191 × 90 that results in 377190
+ 4191 × 900 resulting in 3771900
+ 4191 × 1000 yielding 4191000

= 8377809
