Alright, let's work through 83097817 times 72222581 step by step
83097817 × 72222581 = 72222581 × (83097817)
+ 72222581 × 7 giving us 505558067
+ 72222581 × 10 which equals 722225810
+ 72222581 × 800 resulting in 57778064800
+ 72222581 × 7000 which equals 505558067000
+ 72222581 × 90000 producing 6500032290000
+ 72222581 × 000000 producing 0
+ 72222581 × 3000000 that is equal 216667743000000
+ 72222581 × 80000000 that results in 5777806480000000

= 6001538819205677
