Alright, let's work through 62082504 times 64398428 step by step
62082504 × 64398428 = 64398428 × (62082504)
+ 64398428 × 4 producing 257593712
+ 64398428 × 00 which equals 0
+ 64398428 × 500 what gives us 32199214000
+ 64398428 × 2000 producing 128796856000
+ 64398428 × 80000 yielding 5151874240000
+ 64398428 × 000000 giving us 0
+ 64398428 × 2000000 yielding 128796856000000
+ 64398428 × 60000000 that results in 3863905680000000

= 3998015663903712
