Alright, let's work through 8791 times 9156 step by step
8791 × 9156 = 9156 × (8791)
+ 9156 × 1 which equals 9156
+ 9156 × 90 giving us 824040
+ 9156 × 700 giving us 6409200
+ 9156 × 8000 giving us 73248000

= 80490396
