Alright, let's work through 81697121 times 46342878 step by step
81697121 × 46342878 = 46342878 × (81697121)
+ 46342878 × 1 that is equal 46342878
+ 46342878 × 20 that is equal 926857560
+ 46342878 × 100 that results in 4634287800
+ 46342878 × 7000 what gives us 324400146000
+ 46342878 × 90000 giving us 4170859020000
+ 46342878 × 600000 what gives us 27805726800000
+ 46342878 × 1000000 resulting in 46342878000000
+ 46342878 × 80000000 resulting in 3707430240000000

= 3786079711454238
