Alright, let's work through 6394 times 6279 step by step
6394 × 6279 = 6279 × (6394)
+ 6279 × 4 giving us 25116
+ 6279 × 90 that equals 565110
+ 6279 × 300 resulting in 1883700
+ 6279 × 6000 yielding 37674000

= 40147926
