Alright, let's work through 80349017 times 6511927 step by step
80349017 × 6511927 = 6511927 × (80349017)
+ 6511927 × 7 giving us 45583489
+ 6511927 × 10 resulting in 65119270
+ 6511927 × 000 producing 0
+ 6511927 × 9000 what gives us 58607343000
+ 6511927 × 40000 what gives us 260477080000
+ 6511927 × 300000 that is equal 1953578100000
+ 6511927 × 0000000 that equals 0
+ 6511927 × 80000000 that equals 520954160000000

= 523226933225759
