Alright, let's work through 81985742 times 67276881 step by step
81985742 × 67276881 = 67276881 × (81985742)
+ 67276881 × 2 resulting in 134553762
+ 67276881 × 40 what gives us 2691075240
+ 67276881 × 700 producing 47093816700
+ 67276881 × 5000 giving us 336384405000
+ 67276881 × 80000 resulting in 5382150480000
+ 67276881 × 900000 producing 60549192900000
+ 67276881 × 1000000 producing 67276881000000
+ 67276881 × 80000000 that results in 5382150480000000

= 5515745008230702
