Alright, let's work through 8135 times 9947 step by step
8135 × 9947 = 9947 × (8135)
+ 9947 × 5 that results in 49735
+ 9947 × 30 resulting in 298410
+ 9947 × 100 which equals 994700
+ 9947 × 8000 resulting in 79576000

= 80918845
