Alright, let's work through 3815 times 2287 step by step
3815 × 2287 = 2287 × (3815)
+ 2287 × 5 resulting in 11435
+ 2287 × 10 that results in 22870
+ 2287 × 800 that is equal 1829600
+ 2287 × 3000 that equals 6861000

= 8724905
