Let's calculate 6394 x 3631
6394 × 3631 = 3631 × (6394)
+ 3631 × 4 giving us 14524
+ 3631 × 90 resulting in 326790
+ 3631 × 300 which equals 1089300
+ 3631 × 6000 that results in 21786000

= 23216614
