Alright, let's work through 3841 times 3199 step by step
3841 × 3199 = 3199 × (3841)
+ 3199 × 1 resulting in 3199
+ 3199 × 40 what gives us 127960
+ 3199 × 800 resulting in 2559200
+ 3199 × 3000 that equals 9597000

= 12287359
