Alright, let's work through 3042 times 663 step by step
3042 × 663 = 663 × (3042)
+ 663 × 2 that equals 1326
+ 663 × 40 yielding 26520
+ 663 × 000 yielding 0
+ 663 × 3000 giving us 1989000

= 2016846
