No problem, we've got 78474365 and 80829953 to multiply
78474365 × 80829953 = 80829953 × (78474365)
+ 80829953 × 5 resulting in 404149765
+ 80829953 × 60 which equals 4849797180
+ 80829953 × 300 giving us 24248985900
+ 80829953 × 4000 producing 323319812000
+ 80829953 × 70000 yielding 5658096710000
+ 80829953 × 400000 giving us 32331981200000
+ 80829953 × 8000000 which equals 646639624000000
+ 80829953 × 70000000 resulting in 5658096710000000

= 6343079234654845
