Alright, let's work through 9644 times 8857 step by step
9644 × 8857 = 8857 × (9644)
+ 8857 × 4 what gives us 35428
+ 8857 × 40 what gives us 354280
+ 8857 × 600 resulting in 5314200
+ 8857 × 9000 that results in 79713000

= 85416908
