Alright, let's work through 78647764 times 53462752 step by step
78647764 × 53462752 = 53462752 × (78647764)
+ 53462752 × 4 that results in 213851008
+ 53462752 × 60 which equals 3207765120
+ 53462752 × 700 resulting in 37423926400
+ 53462752 × 7000 producing 374239264000
+ 53462752 × 40000 giving us 2138510080000
+ 53462752 × 600000 what gives us 32077651200000
+ 53462752 × 8000000 resulting in 427702016000000
+ 53462752 × 70000000 giving us 3742392640000000

= 4204725902086528
