Alright, let's work through 68507140 times 66463676 step by step
68507140 × 66463676 = 66463676 × (68507140)
+ 66463676 × 0 producing 0
+ 66463676 × 40 resulting in 2658547040
+ 66463676 × 100 producing 6646367600
+ 66463676 × 7000 giving us 465245732000
+ 66463676 × 00000 producing 0
+ 66463676 × 500000 that equals 33231838000000
+ 66463676 × 8000000 which equals 531709408000000
+ 66463676 × 60000000 what gives us 3987820560000000

= 4553236356646640
