Alright, let's work through 6573 times 3990 step by step
6573 × 3990 = 3990 × (6573)
+ 3990 × 3 giving us 11970
+ 3990 × 70 that is equal 279300
+ 3990 × 500 yielding 1995000
+ 3990 × 6000 yielding 23940000

= 26226270
