Alright, let's work through 78796860 times 64634004 step by step
78796860 × 64634004 = 64634004 × (78796860)
+ 64634004 × 0 that is equal 0
+ 64634004 × 60 producing 3878040240
+ 64634004 × 800 which equals 51707203200
+ 64634004 × 6000 which equals 387804024000
+ 64634004 × 90000 that results in 5817060360000
+ 64634004 × 700000 that results in 45243802800000
+ 64634004 × 8000000 yielding 517072032000000
+ 64634004 × 70000000 yielding 4524380280000000

= 5092956564427440
