Alright, let's work through 3399 times 1855 step by step
3399 × 1855 = 1855 × (3399)
+ 1855 × 9 that is equal 16695
+ 1855 × 90 what gives us 166950
+ 1855 × 300 resulting in 556500
+ 1855 × 3000 that equals 5565000

= 6305145
