Alright, let's work through 5904 times 6720 step by step
5904 × 6720 = 6720 × (5904)
+ 6720 × 4 yielding 26880
+ 6720 × 00 what gives us 0
+ 6720 × 900 resulting in 6048000
+ 6720 × 5000 resulting in 33600000

= 39674880
