Alright, let's work through 6539 times 3992 step by step
6539 × 3992 = 3992 × (6539)
+ 3992 × 9 resulting in 35928
+ 3992 × 30 producing 119760
+ 3992 × 500 resulting in 1996000
+ 3992 × 6000 resulting in 23952000

= 26103688
