Alright, let's work through 6427 times 2126 step by step
6427 × 2126 = 2126 × (6427)
+ 2126 × 7 giving us 14882
+ 2126 × 20 what gives us 42520
+ 2126 × 400 yielding 850400
+ 2126 × 6000 that results in 12756000

= 13663802
