Let's calculate 4991 x 2779
4991 × 2779 = 2779 × (4991)
+ 2779 × 1 yielding 2779
+ 2779 × 90 that results in 250110
+ 2779 × 900 that results in 2501100
+ 2779 × 4000 which equals 11116000

= 13869989
