Alright, let's work through 2543 times 8188 step by step
2543 × 8188 = 8188 × (2543)
+ 8188 × 3 what gives us 24564
+ 8188 × 40 which equals 327520
+ 8188 × 500 that is equal 4094000
+ 8188 × 2000 which equals 16376000

= 20822084
