Alright, let's work through 1600 times 3910 step by step
1600 × 3910 = 3910 × (1600)
+ 3910 × 0 that is equal 0
+ 3910 × 00 producing 0
+ 3910 × 600 resulting in 2346000
+ 3910 × 1000 producing 3910000

= 6256000
