Let's calculate 8889 x 8939
8889 × 8939 = 8939 × (8889)
+ 8939 × 9 that is equal 80451
+ 8939 × 80 resulting in 715120
+ 8939 × 800 that is equal 7151200
+ 8939 × 8000 resulting in 71512000

= 79458771
