Alright, let's work through 6003 times 4002 step by step
6003 × 4002 = 4002 × (6003)
+ 4002 × 3 producing 12006
+ 4002 × 00 yielding 0
+ 4002 × 000 which equals 0
+ 4002 × 6000 giving us 24012000

= 24024006
