Alright, let's work through 80105425 times 34934885 step by step
80105425 × 34934885 = 34934885 × (80105425)
+ 34934885 × 5 what gives us 174674425
+ 34934885 × 20 resulting in 698697700
+ 34934885 × 400 producing 13973954000
+ 34934885 × 5000 yielding 174674425000
+ 34934885 × 00000 which equals 0
+ 34934885 × 100000 which equals 3493488500000
+ 34934885 × 0000000 that is equal 0
+ 34934885 × 80000000 resulting in 2794790800000000

= 2798473810251125
