Alright, let's work through 9859 times 5435 step by step
9859 × 5435 = 5435 × (9859)
+ 5435 × 9 giving us 48915
+ 5435 × 50 resulting in 271750
+ 5435 × 800 that is equal 4348000
+ 5435 × 9000 that results in 48915000

= 53583665
