Let's calculate 6397 x 8389
6397 × 8389 = 8389 × (6397)
+ 8389 × 7 which equals 58723
+ 8389 × 90 producing 755010
+ 8389 × 300 that results in 2516700
+ 8389 × 6000 what gives us 50334000

= 53664433
