Let's calculate 9158 x 8712
9158 × 8712 = 8712 × (9158)
+ 8712 × 8 resulting in 69696
+ 8712 × 50 resulting in 435600
+ 8712 × 100 which equals 871200
+ 8712 × 9000 that results in 78408000

= 79784496
