Alright, let's work through 80339082 times 65376804 step by step
80339082 × 65376804 = 65376804 × (80339082)
+ 65376804 × 2 yielding 130753608
+ 65376804 × 80 what gives us 5230144320
+ 65376804 × 000 yielding 0
+ 65376804 × 9000 what gives us 588391236000
+ 65376804 × 30000 yielding 1961304120000
+ 65376804 × 300000 that results in 19613041200000
+ 65376804 × 0000000 that results in 0
+ 65376804 × 80000000 which equals 5230144320000000

= 5252312417453928
