Alright, let's work through 86538134 times 34399939 step by step
86538134 × 34399939 = 34399939 × (86538134)
+ 34399939 × 4 producing 137599756
+ 34399939 × 30 which equals 1031998170
+ 34399939 × 100 giving us 3439993900
+ 34399939 × 8000 that equals 275199512000
+ 34399939 × 30000 producing 1031998170000
+ 34399939 × 500000 that equals 17199969500000
+ 34399939 × 6000000 producing 206399634000000
+ 34399939 × 80000000 that is equal 2751995120000000

= 2976906530773826
