Alright, let's work through 8867 times 663 step by step
8867 × 663 = 663 × (8867)
+ 663 × 7 which equals 4641
+ 663 × 60 that is equal 39780
+ 663 × 800 which equals 530400
+ 663 × 8000 resulting in 5304000

= 5878821
