Alright, let's work through 8188 times 8903 step by step
8188 × 8903 = 8903 × (8188)
+ 8903 × 8 producing 71224
+ 8903 × 80 that is equal 712240
+ 8903 × 100 yielding 890300
+ 8903 × 8000 that results in 71224000

= 72897764
