Alright, let's work through 86668915 times 46218128 step by step
86668915 × 46218128 = 46218128 × (86668915)
+ 46218128 × 5 what gives us 231090640
+ 46218128 × 10 that is equal 462181280
+ 46218128 × 900 producing 41596315200
+ 46218128 × 8000 that equals 369745024000
+ 46218128 × 60000 what gives us 2773087680000
+ 46218128 × 600000 that is equal 27730876800000
+ 46218128 × 6000000 producing 277308768000000
+ 46218128 × 80000000 that is equal 3697450240000000

= 4005675007091120
