Alright, let's work through 1815 times 9571 step by step
1815 × 9571 = 9571 × (1815)
+ 9571 × 5 which equals 47855
+ 9571 × 10 that results in 95710
+ 9571 × 800 that results in 7656800
+ 9571 × 1000 resulting in 9571000

= 17371365
