No problem, we've got 78174278 and 91319801 to multiply
78174278 × 91319801 = 91319801 × (78174278)
+ 91319801 × 8 yielding 730558408
+ 91319801 × 70 which equals 6392386070
+ 91319801 × 200 producing 18263960200
+ 91319801 × 4000 which equals 365279204000
+ 91319801 × 70000 that results in 6392386070000
+ 91319801 × 100000 resulting in 9131980100000
+ 91319801 × 8000000 producing 730558408000000
+ 91319801 × 70000000 yielding 6392386070000000

= 7138859510278678
