Alright, let's work through 8334821 times 16452915 step by step
8334821 × 16452915 = 16452915 × (8334821)
+ 16452915 × 1 giving us 16452915
+ 16452915 × 20 which equals 329058300
+ 16452915 × 800 that equals 13162332000
+ 16452915 × 4000 which equals 65811660000
+ 16452915 × 30000 producing 493587450000
+ 16452915 × 300000 yielding 4935874500000
+ 16452915 × 8000000 that results in 131623320000000

= 137132101453215
