Alright, let's work through 78114912 times 64563134 step by step
78114912 × 64563134 = 64563134 × (78114912)
+ 64563134 × 2 that results in 129126268
+ 64563134 × 10 which equals 645631340
+ 64563134 × 900 what gives us 58106820600
+ 64563134 × 4000 giving us 258252536000
+ 64563134 × 10000 producing 645631340000
+ 64563134 × 100000 producing 6456313400000
+ 64563134 × 8000000 resulting in 516505072000000
+ 64563134 × 70000000 what gives us 4519419380000000

= 5043343530854208
