Let's calculate 3428 x 1165
3428 × 1165 = 1165 × (3428)
+ 1165 × 8 that results in 9320
+ 1165 × 20 that results in 23300
+ 1165 × 400 what gives us 466000
+ 1165 × 3000 that results in 3495000

= 3993620
