Alright, let's work through 6812 times 6199 step by step
6812 × 6199 = 6199 × (6812)
+ 6199 × 2 that is equal 12398
+ 6199 × 10 that results in 61990
+ 6199 × 800 that results in 4959200
+ 6199 × 6000 producing 37194000

= 42227588
