Alright, let's work through 78066617 times 88079120 step by step
78066617 × 88079120 = 88079120 × (78066617)
+ 88079120 × 7 which equals 616553840
+ 88079120 × 10 giving us 880791200
+ 88079120 × 600 that equals 52847472000
+ 88079120 × 6000 that equals 528474720000
+ 88079120 × 60000 that results in 5284747200000
+ 88079120 × 000000 that results in 0
+ 88079120 × 8000000 that is equal 704632960000000
+ 88079120 × 70000000 yielding 6165538400000000

= 6876038926737040
