Alright, let's work through 81330705 times 38298255 step by step
81330705 × 38298255 = 38298255 × (81330705)
+ 38298255 × 5 producing 191491275
+ 38298255 × 00 that results in 0
+ 38298255 × 700 what gives us 26808778500
+ 38298255 × 0000 what gives us 0
+ 38298255 × 30000 that results in 1148947650000
+ 38298255 × 300000 what gives us 11489476500000
+ 38298255 × 1000000 producing 38298255000000
+ 38298255 × 80000000 yielding 3063860400000000

= 3114824079419775
