Alright, let's work through 1815 times 1904 step by step
1815 × 1904 = 1904 × (1815)
+ 1904 × 5 that results in 9520
+ 1904 × 10 that is equal 19040
+ 1904 × 800 resulting in 1523200
+ 1904 × 1000 that results in 1904000

= 3455760
