Alright, let's work through 8678 times 9787 step by step
8678 × 9787 = 9787 × (8678)
+ 9787 × 8 giving us 78296
+ 9787 × 70 resulting in 685090
+ 9787 × 600 which equals 5872200
+ 9787 × 8000 yielding 78296000

= 84931586
