We're going to solve 8349 multiplied by 8640
8349 × 8640 = 8640 × (8349)
+ 8640 × 9 producing 77760
+ 8640 × 40 resulting in 345600
+ 8640 × 300 resulting in 2592000
+ 8640 × 8000 which equals 69120000

= 72135360
