Alright, let's work through 86267608 times 78394705 step by step
86267608 × 78394705 = 78394705 × (86267608)
+ 78394705 × 8 that results in 627157640
+ 78394705 × 00 yielding 0
+ 78394705 × 600 yielding 47036823000
+ 78394705 × 7000 yielding 548762935000
+ 78394705 × 60000 which equals 4703682300000
+ 78394705 × 200000 which equals 15678941000000
+ 78394705 × 6000000 that is equal 470368230000000
+ 78394705 × 80000000 that equals 6271576400000000

= 6762923680215640
