Alright, let's work through 6436 times 6617 step by step
6436 × 6617 = 6617 × (6436)
+ 6617 × 6 producing 39702
+ 6617 × 30 which equals 198510
+ 6617 × 400 that is equal 2646800
+ 6617 × 6000 that results in 39702000

= 42587012
