Alright, let's work through 7894 times 8807 step by step
7894 × 8807 = 8807 × (7894)
+ 8807 × 4 producing 35228
+ 8807 × 90 yielding 792630
+ 8807 × 800 giving us 7045600
+ 8807 × 7000 giving us 61649000

= 69522458
