Alright, let's work through 45680039 times 85817086 step by step
45680039 × 85817086 = 85817086 × (45680039)
+ 85817086 × 9 that equals 772353774
+ 85817086 × 30 which equals 2574512580
+ 85817086 × 000 which equals 0
+ 85817086 × 0000 yielding 0
+ 85817086 × 80000 yielding 6865366880000
+ 85817086 × 600000 yielding 51490251600000
+ 85817086 × 5000000 giving us 429085430000000
+ 85817086 × 40000000 giving us 3432683440000000

= 3920127835346354
