Alright, let's work through 6409 times 6725 step by step
6409 × 6725 = 6725 × (6409)
+ 6725 × 9 yielding 60525
+ 6725 × 00 resulting in 0
+ 6725 × 400 that results in 2690000
+ 6725 × 6000 that results in 40350000

= 43100525
