Alright, let's work through 6427 times 1578 step by step
6427 × 1578 = 1578 × (6427)
+ 1578 × 7 resulting in 11046
+ 1578 × 20 resulting in 31560
+ 1578 × 400 yielding 631200
+ 1578 × 6000 resulting in 9468000

= 10141806
