Alright, let's work through 6663 times 6379 step by step
6663 × 6379 = 6379 × (6663)
+ 6379 × 3 that is equal 19137
+ 6379 × 60 giving us 382740
+ 6379 × 600 yielding 3827400
+ 6379 × 6000 what gives us 38274000

= 42503277
