Alright, let's work through 9723 times 8112 step by step
9723 × 8112 = 8112 × (9723)
+ 8112 × 3 producing 24336
+ 8112 × 20 that equals 162240
+ 8112 × 700 that equals 5678400
+ 8112 × 9000 that equals 73008000

= 78872976
