Alright, let's work through 3815 times 1504 step by step
3815 × 1504 = 1504 × (3815)
+ 1504 × 5 yielding 7520
+ 1504 × 10 what gives us 15040
+ 1504 × 800 that results in 1203200
+ 1504 × 3000 yielding 4512000

= 5737760
