Alright, let's work through 7791 times 504 step by step
7791 × 504 = 504 × (7791)
+ 504 × 1 that results in 504
+ 504 × 90 producing 45360
+ 504 × 700 producing 352800
+ 504 × 7000 that results in 3528000

= 3926664
