Alright, let's work through 1042 times 9966 step by step
1042 × 9966 = 9966 × (1042)
+ 9966 × 2 that is equal 19932
+ 9966 × 40 producing 398640
+ 9966 × 000 giving us 0
+ 9966 × 1000 yielding 9966000

= 10384572
