Alright, let's work through 8196 times 7881 step by step
8196 × 7881 = 7881 × (8196)
+ 7881 × 6 yielding 47286
+ 7881 × 90 that is equal 709290
+ 7881 × 100 yielding 788100
+ 7881 × 8000 that is equal 63048000

= 64592676
