Alright, let's work through 8445 times 9910 step by step
8445 × 9910 = 9910 × (8445)
+ 9910 × 5 yielding 49550
+ 9910 × 40 what gives us 396400
+ 9910 × 400 what gives us 3964000
+ 9910 × 8000 resulting in 79280000

= 83689950
