Alright, let's work through 8645 times 9507 step by step
8645 × 9507 = 9507 × (8645)
+ 9507 × 5 which equals 47535
+ 9507 × 40 producing 380280
+ 9507 × 600 what gives us 5704200
+ 9507 × 8000 producing 76056000

= 82188015
