Alright, let's work through 8515 times 4002 step by step
8515 × 4002 = 4002 × (8515)
+ 4002 × 5 resulting in 20010
+ 4002 × 10 which equals 40020
+ 4002 × 500 resulting in 2001000
+ 4002 × 8000 which equals 32016000

= 34077030
