Alright, let's work through 2877 times 6543 step by step
2877 × 6543 = 6543 × (2877)
+ 6543 × 7 that equals 45801
+ 6543 × 70 that results in 458010
+ 6543 × 800 producing 5234400
+ 6543 × 2000 resulting in 13086000

= 18824211
