Alright, let's work through 76677771 times 42643245 step by step
76677771 × 42643245 = 42643245 × (76677771)
+ 42643245 × 1 that results in 42643245
+ 42643245 × 70 which equals 2985027150
+ 42643245 × 700 which equals 29850271500
+ 42643245 × 7000 giving us 298502715000
+ 42643245 × 70000 that equals 2985027150000
+ 42643245 × 600000 yielding 25585947000000
+ 42643245 × 6000000 giving us 255859470000000
+ 42643245 × 70000000 that is equal 2985027150000000

= 3269788974806895
