Alright, let's work through 4147 times 3809 step by step
4147 × 3809 = 3809 × (4147)
+ 3809 × 7 what gives us 26663
+ 3809 × 40 which equals 152360
+ 3809 × 100 that equals 380900
+ 3809 × 4000 which equals 15236000

= 15795923
