Alright, let's work through 9723 times 7897 step by step
9723 × 7897 = 7897 × (9723)
+ 7897 × 3 what gives us 23691
+ 7897 × 20 resulting in 157940
+ 7897 × 700 yielding 5527900
+ 7897 × 9000 yielding 71073000

= 76782531
