Alright, let's work through 2812 times 1512 step by step
2812 × 1512 = 1512 × (2812)
+ 1512 × 2 that results in 3024
+ 1512 × 10 what gives us 15120
+ 1512 × 800 giving us 1209600
+ 1512 × 2000 yielding 3024000

= 4251744
