Alright, let's work through 80578577 times 49989650 step by step
80578577 × 49989650 = 49989650 × (80578577)
+ 49989650 × 7 producing 349927550
+ 49989650 × 70 resulting in 3499275500
+ 49989650 × 500 giving us 24994825000
+ 49989650 × 8000 that equals 399917200000
+ 49989650 × 70000 that equals 3499275500000
+ 49989650 × 500000 that results in 24994825000000
+ 49989650 × 0000000 yielding 0
+ 49989650 × 80000000 giving us 3999172000000000

= 4028094861728050
