Alright, let's work through 1812 times 2871 step by step
1812 × 2871 = 2871 × (1812)
+ 2871 × 2 yielding 5742
+ 2871 × 10 what gives us 28710
+ 2871 × 800 that is equal 2296800
+ 2871 × 1000 producing 2871000

= 5202252
