Alright, let's work through 6468 times 9989 step by step
6468 × 9989 = 9989 × (6468)
+ 9989 × 8 resulting in 79912
+ 9989 × 60 yielding 599340
+ 9989 × 400 giving us 3995600
+ 9989 × 6000 producing 59934000

= 64608852
