Alright, let's work through 67764638 times 51005657 step by step
67764638 × 51005657 = 51005657 × (67764638)
+ 51005657 × 8 that results in 408045256
+ 51005657 × 30 yielding 1530169710
+ 51005657 × 600 that results in 30603394200
+ 51005657 × 4000 that equals 204022628000
+ 51005657 × 60000 producing 3060339420000
+ 51005657 × 700000 yielding 35703959900000
+ 51005657 × 7000000 which equals 357039599000000
+ 51005657 × 60000000 what gives us 3060339420000000

= 3456379882557166
