Alright, let's work through 2397 times 2143 step by step
2397 × 2143 = 2143 × (2397)
+ 2143 × 7 what gives us 15001
+ 2143 × 90 what gives us 192870
+ 2143 × 300 producing 642900
+ 2143 × 2000 what gives us 4286000

= 5136771
