Alright, let's work through 6491 times 6446 step by step
6491 × 6446 = 6446 × (6491)
+ 6446 × 1 that results in 6446
+ 6446 × 90 that is equal 580140
+ 6446 × 400 yielding 2578400
+ 6446 × 6000 that equals 38676000

= 41840986
