Alright, let's work through 3917 times 4071 step by step
3917 × 4071 = 4071 × (3917)
+ 4071 × 7 producing 28497
+ 4071 × 10 producing 40710
+ 4071 × 900 that is equal 3663900
+ 4071 × 3000 which equals 12213000

= 15946107
