Alright, let's work through 28899872 times 76124815 step by step
28899872 × 76124815 = 76124815 × (28899872)
+ 76124815 × 2 giving us 152249630
+ 76124815 × 70 that results in 5328737050
+ 76124815 × 800 which equals 60899852000
+ 76124815 × 9000 producing 685123335000
+ 76124815 × 90000 which equals 6851233350000
+ 76124815 × 800000 producing 60899852000000
+ 76124815 × 8000000 resulting in 608998520000000
+ 76124815 × 20000000 yielding 1522496300000000

= 2199997409523680
