Alright, let's work through 2840 times 5589 step by step
2840 × 5589 = 5589 × (2840)
+ 5589 × 0 that is equal 0
+ 5589 × 40 that equals 223560
+ 5589 × 800 which equals 4471200
+ 5589 × 2000 resulting in 11178000

= 15872760
