Alright, let's work through 4291 times 3955 step by step
4291 × 3955 = 3955 × (4291)
+ 3955 × 1 producing 3955
+ 3955 × 90 that is equal 355950
+ 3955 × 200 that is equal 791000
+ 3955 × 4000 that equals 15820000

= 16970905
