Let's calculate 6397 x 4530
6397 × 4530 = 4530 × (6397)
+ 4530 × 7 that equals 31710
+ 4530 × 90 that is equal 407700
+ 4530 × 300 that is equal 1359000
+ 4530 × 6000 that results in 27180000

= 28978410
