Alright, let's work through 6838 times 1686 step by step
6838 × 1686 = 1686 × (6838)
+ 1686 × 8 yielding 13488
+ 1686 × 30 what gives us 50580
+ 1686 × 800 giving us 1348800
+ 1686 × 6000 that results in 10116000

= 11528868
