Alright, let's work through 8503 times 9642 step by step
8503 × 9642 = 9642 × (8503)
+ 9642 × 3 producing 28926
+ 9642 × 00 producing 0
+ 9642 × 500 producing 4821000
+ 9642 × 8000 which equals 77136000

= 81985926
