Alright, let's work through 2889 times 4139 step by step
2889 × 4139 = 4139 × (2889)
+ 4139 × 9 which equals 37251
+ 4139 × 80 which equals 331120
+ 4139 × 800 giving us 3311200
+ 4139 × 2000 what gives us 8278000

= 11957571
