Alright, let's work through 81713676 times 40377744 step by step
81713676 × 40377744 = 40377744 × (81713676)
+ 40377744 × 6 giving us 242266464
+ 40377744 × 70 giving us 2826442080
+ 40377744 × 600 which equals 24226646400
+ 40377744 × 3000 producing 121133232000
+ 40377744 × 10000 yielding 403777440000
+ 40377744 × 700000 resulting in 28264420800000
+ 40377744 × 1000000 producing 40377744000000
+ 40377744 × 80000000 what gives us 3230219520000000

= 3299413890826944
