Alright, let's work through 80368420 times 72850976 step by step
80368420 × 72850976 = 72850976 × (80368420)
+ 72850976 × 0 that results in 0
+ 72850976 × 20 producing 1457019520
+ 72850976 × 400 yielding 29140390400
+ 72850976 × 8000 resulting in 582807808000
+ 72850976 × 60000 which equals 4371058560000
+ 72850976 × 300000 producing 21855292800000
+ 72850976 × 0000000 that equals 0
+ 72850976 × 80000000 what gives us 5828078080000000

= 5854917836577920
