Alright, let's work through 4912 times 4112 step by step
4912 × 4112 = 4112 × (4912)
+ 4112 × 2 yielding 8224
+ 4112 × 10 yielding 41120
+ 4112 × 900 what gives us 3700800
+ 4112 × 4000 which equals 16448000

= 20198144
