Alright, let's work through 81459105 times 64068912 step by step
81459105 × 64068912 = 64068912 × (81459105)
+ 64068912 × 5 producing 320344560
+ 64068912 × 00 that results in 0
+ 64068912 × 100 resulting in 6406891200
+ 64068912 × 9000 giving us 576620208000
+ 64068912 × 50000 yielding 3203445600000
+ 64068912 × 400000 which equals 25627564800000
+ 64068912 × 1000000 that is equal 64068912000000
+ 64068912 × 80000000 producing 5125512960000000

= 5218996229843760
