Alright, let's work through 64350481 times 13279321 step by step
64350481 × 13279321 = 13279321 × (64350481)
+ 13279321 × 1 which equals 13279321
+ 13279321 × 80 what gives us 1062345680
+ 13279321 × 400 giving us 5311728400
+ 13279321 × 0000 yielding 0
+ 13279321 × 50000 that results in 663966050000
+ 13279321 × 300000 which equals 3983796300000
+ 13279321 × 4000000 resulting in 53117284000000
+ 13279321 × 60000000 yielding 796759260000000

= 854530693703401
