Alright, let's work through 81289946 times 135042 step by step
81289946 × 135042 = 135042 × (81289946)
+ 135042 × 6 that equals 810252
+ 135042 × 40 which equals 5401680
+ 135042 × 900 what gives us 121537800
+ 135042 × 9000 that equals 1215378000
+ 135042 × 80000 giving us 10803360000
+ 135042 × 200000 producing 27008400000
+ 135042 × 1000000 producing 135042000000
+ 135042 × 80000000 producing 10803360000000

= 10977556887732
