Alright, let's work through 6379 times 6143 step by step
6379 × 6143 = 6143 × (6379)
+ 6143 × 9 that equals 55287
+ 6143 × 70 producing 430010
+ 6143 × 300 producing 1842900
+ 6143 × 6000 producing 36858000

= 39186197
