Alright, let's work through 16284454 times 78799909 step by step
16284454 × 78799909 = 78799909 × (16284454)
+ 78799909 × 4 yielding 315199636
+ 78799909 × 50 yielding 3939995450
+ 78799909 × 400 producing 31519963600
+ 78799909 × 4000 producing 315199636000
+ 78799909 × 80000 that equals 6303992720000
+ 78799909 × 200000 that results in 15759981800000
+ 78799909 × 6000000 yielding 472799454000000
+ 78799909 × 10000000 giving us 787999090000000

= 1283213493314686
