Alright, let's work through 77976704 times 83120285 step by step
77976704 × 83120285 = 83120285 × (77976704)
+ 83120285 × 4 producing 332481140
+ 83120285 × 00 that results in 0
+ 83120285 × 700 that is equal 58184199500
+ 83120285 × 6000 producing 498721710000
+ 83120285 × 70000 what gives us 5818419950000
+ 83120285 × 900000 yielding 74808256500000
+ 83120285 × 7000000 producing 581841995000000
+ 83120285 × 70000000 that equals 5818419950000000

= 6481445859840640
