Alright, let's work through 6389 times 5616 step by step
6389 × 5616 = 5616 × (6389)
+ 5616 × 9 what gives us 50544
+ 5616 × 80 giving us 449280
+ 5616 × 300 yielding 1684800
+ 5616 × 6000 resulting in 33696000

= 35880624
