We're going to solve 8642 multiplied by 8387
8642 × 8387 = 8387 × (8642)
+ 8387 × 2 which equals 16774
+ 8387 × 40 producing 335480
+ 8387 × 600 which equals 5032200
+ 8387 × 8000 yielding 67096000

= 72480454
