Alright, let's work through 8415 times 8105 step by step
8415 × 8105 = 8105 × (8415)
+ 8105 × 5 resulting in 40525
+ 8105 × 10 resulting in 81050
+ 8105 × 400 which equals 3242000
+ 8105 × 8000 which equals 64840000

= 68203575
