Alright, let's work through 6543 times 6398 step by step
6543 × 6398 = 6398 × (6543)
+ 6398 × 3 giving us 19194
+ 6398 × 40 which equals 255920
+ 6398 × 500 giving us 3199000
+ 6398 × 6000 giving us 38388000

= 41862114
