Let's calculate 6379 x 6321
6379 × 6321 = 6321 × (6379)
+ 6321 × 9 which equals 56889
+ 6321 × 70 that is equal 442470
+ 6321 × 300 giving us 1896300
+ 6321 × 6000 that results in 37926000

= 40321659
