Let's calculate 4991 x 4188
4991 × 4188 = 4188 × (4991)
+ 4188 × 1 that results in 4188
+ 4188 × 90 that is equal 376920
+ 4188 × 900 which equals 3769200
+ 4188 × 4000 resulting in 16752000

= 20902308
