Let's calculate 3997 x 4395
3997 × 4395 = 4395 × (3997)
+ 4395 × 7 what gives us 30765
+ 4395 × 90 that results in 395550
+ 4395 × 900 that equals 3955500
+ 4395 × 3000 giving us 13185000

= 17566815
