Alright, let's work through 1612 times 3304 step by step
1612 × 3304 = 3304 × (1612)
+ 3304 × 2 that is equal 6608
+ 3304 × 10 yielding 33040
+ 3304 × 600 that is equal 1982400
+ 3304 × 1000 giving us 3304000

= 5326048
