Alright, let's work through 3309 times 5502 step by step
3309 × 5502 = 5502 × (3309)
+ 5502 × 9 producing 49518
+ 5502 × 00 that is equal 0
+ 5502 × 300 which equals 1650600
+ 5502 × 3000 producing 16506000

= 18206118
