Alright, let's work through 8378 times 9886 step by step
8378 × 9886 = 9886 × (8378)
+ 9886 × 8 producing 79088
+ 9886 × 70 that results in 692020
+ 9886 × 300 that results in 2965800
+ 9886 × 8000 that results in 79088000

= 82824908
