We're going to solve 8915 multiplied by 8109
8915 × 8109 = 8109 × (8915)
+ 8109 × 5 producing 40545
+ 8109 × 10 yielding 81090
+ 8109 × 900 giving us 7298100
+ 8109 × 8000 producing 64872000

= 72291735
