Alright, let's work through 8539 times 8363 step by step
8539 × 8363 = 8363 × (8539)
+ 8363 × 9 producing 75267
+ 8363 × 30 which equals 250890
+ 8363 × 500 producing 4181500
+ 8363 × 8000 that equals 66904000

= 71411657
