Alright, let's work through 1871 times 9009 step by step
1871 × 9009 = 9009 × (1871)
+ 9009 × 1 that is equal 9009
+ 9009 × 70 resulting in 630630
+ 9009 × 800 that results in 7207200
+ 9009 × 1000 producing 9009000

= 16855839
