Alright, let's work through 3409 times 1869 step by step
3409 × 1869 = 1869 × (3409)
+ 1869 × 9 that is equal 16821
+ 1869 × 00 what gives us 0
+ 1869 × 400 resulting in 747600
+ 1869 × 3000 giving us 5607000

= 6371421
