Alright, let's work through 86109107 times 68054689 step by step
86109107 × 68054689 = 68054689 × (86109107)
+ 68054689 × 7 that equals 476382823
+ 68054689 × 00 resulting in 0
+ 68054689 × 100 giving us 6805468900
+ 68054689 × 9000 what gives us 612492201000
+ 68054689 × 00000 resulting in 0
+ 68054689 × 100000 that equals 6805468900000
+ 68054689 × 6000000 which equals 408328134000000
+ 68054689 × 80000000 producing 5444375120000000

= 5860128496952723
