Alright, let's work through 4122 times 199 step by step
4122 × 199 = 199 × (4122)
+ 199 × 2 resulting in 398
+ 199 × 20 resulting in 3980
+ 199 × 100 that is equal 19900
+ 199 × 4000 what gives us 796000

= 820278
