Alright, let's work through 6435 times 544 step by step
6435 × 544 = 544 × (6435)
+ 544 × 5 that results in 2720
+ 544 × 30 yielding 16320
+ 544 × 400 producing 217600
+ 544 × 6000 what gives us 3264000

= 3500640
