Alright, let's work through 8729 times 9138 step by step
8729 × 9138 = 9138 × (8729)
+ 9138 × 9 resulting in 82242
+ 9138 × 20 giving us 182760
+ 9138 × 700 which equals 6396600
+ 9138 × 8000 that is equal 73104000

= 79765602
