Alright, let's work through 9913 times 9072 step by step
9913 × 9072 = 9072 × (9913)
+ 9072 × 3 yielding 27216
+ 9072 × 10 producing 90720
+ 9072 × 900 producing 8164800
+ 9072 × 9000 producing 81648000

= 89930736
