Alright, let's work through 87014640 times 43420187 step by step
87014640 × 43420187 = 43420187 × (87014640)
+ 43420187 × 0 giving us 0
+ 43420187 × 40 producing 1736807480
+ 43420187 × 600 yielding 26052112200
+ 43420187 × 4000 resulting in 173680748000
+ 43420187 × 10000 producing 434201870000
+ 43420187 × 000000 what gives us 0
+ 43420187 × 7000000 producing 303941309000000
+ 43420187 × 80000000 giving us 3473614960000000

= 3778191940537680
