Alright, let's work through 8523 times 2715 step by step
8523 × 2715 = 2715 × (8523)
+ 2715 × 3 resulting in 8145
+ 2715 × 20 what gives us 54300
+ 2715 × 500 that is equal 1357500
+ 2715 × 8000 that is equal 21720000

= 23139945
