Alright, let's work through 3458 times 1199 step by step
3458 × 1199 = 1199 × (3458)
+ 1199 × 8 that is equal 9592
+ 1199 × 50 giving us 59950
+ 1199 × 400 resulting in 479600
+ 1199 × 3000 resulting in 3597000

= 4146142
