Alright, let's work through 8163 times 9928 step by step
8163 × 9928 = 9928 × (8163)
+ 9928 × 3 giving us 29784
+ 9928 × 60 giving us 595680
+ 9928 × 100 resulting in 992800
+ 9928 × 8000 giving us 79424000

= 81042264
