Let's calculate 8391 x 2992
8391 × 2992 = 2992 × (8391)
+ 2992 × 1 resulting in 2992
+ 2992 × 90 that results in 269280
+ 2992 × 300 that results in 897600
+ 2992 × 8000 producing 23936000

= 25105872
