Let's calculate 3394 x 6221
3394 × 6221 = 6221 × (3394)
+ 6221 × 4 which equals 24884
+ 6221 × 90 that equals 559890
+ 6221 × 300 that is equal 1866300
+ 6221 × 3000 resulting in 18663000

= 21114074
