Alright, let's work through 62002789 times 64478682 step by step
62002789 × 64478682 = 64478682 × (62002789)
+ 64478682 × 9 which equals 580308138
+ 64478682 × 80 producing 5158294560
+ 64478682 × 700 giving us 45135077400
+ 64478682 × 2000 producing 128957364000
+ 64478682 × 00000 resulting in 0
+ 64478682 × 000000 that equals 0
+ 64478682 × 2000000 that results in 128957364000000
+ 64478682 × 60000000 producing 3868720920000000

= 3997858115044098
