Alright, let's work through 8213 times 8878 step by step
8213 × 8878 = 8878 × (8213)
+ 8878 × 3 producing 26634
+ 8878 × 10 resulting in 88780
+ 8878 × 200 producing 1775600
+ 8878 × 8000 which equals 71024000

= 72915014
