Alright, let's work through 78799368 times 69188013 step by step
78799368 × 69188013 = 69188013 × (78799368)
+ 69188013 × 8 yielding 553504104
+ 69188013 × 60 that equals 4151280780
+ 69188013 × 300 yielding 20756403900
+ 69188013 × 9000 that results in 622692117000
+ 69188013 × 90000 that results in 6226921170000
+ 69188013 × 700000 that equals 48431609100000
+ 69188013 × 8000000 yielding 553504104000000
+ 69188013 × 70000000 resulting in 4843160910000000

= 5451971697575784
