Alright, let's work through 8839 times 449 step by step
8839 × 449 = 449 × (8839)
+ 449 × 9 resulting in 4041
+ 449 × 30 that results in 13470
+ 449 × 800 resulting in 359200
+ 449 × 8000 giving us 3592000

= 3968711
