Alright, let's work through 9912 times 6453 step by step
9912 × 6453 = 6453 × (9912)
+ 6453 × 2 what gives us 12906
+ 6453 × 10 producing 64530
+ 6453 × 900 which equals 5807700
+ 6453 × 9000 yielding 58077000

= 63962136
