Alright, let's work through 8539 times 8092 step by step
8539 × 8092 = 8092 × (8539)
+ 8092 × 9 producing 72828
+ 8092 × 30 that is equal 242760
+ 8092 × 500 that is equal 4046000
+ 8092 × 8000 yielding 64736000

= 69097588
