We're going to solve 1991 multiplied by 5663
1991 × 5663 = 5663 × (1991)
+ 5663 × 1 which equals 5663
+ 5663 × 90 giving us 509670
+ 5663 × 900 yielding 5096700
+ 5663 × 1000 what gives us 5663000

= 11275033
