Alright, let's work through 6504 times 4128 step by step
6504 × 4128 = 4128 × (6504)
+ 4128 × 4 resulting in 16512
+ 4128 × 00 what gives us 0
+ 4128 × 500 yielding 2064000
+ 4128 × 6000 yielding 24768000

= 26848512
