Alright, let's work through 6241 times 6400 step by step
6241 × 6400 = 6400 × (6241)
+ 6400 × 1 producing 6400
+ 6400 × 40 that is equal 256000
+ 6400 × 200 producing 1280000
+ 6400 × 6000 what gives us 38400000

= 39942400
