Alright, let's work through 4009 times 8428 step by step
4009 × 8428 = 8428 × (4009)
+ 8428 × 9 yielding 75852
+ 8428 × 00 yielding 0
+ 8428 × 000 that equals 0
+ 8428 × 4000 giving us 33712000

= 33787852
