Alright, let's work through 6686 times 6123 step by step
6686 × 6123 = 6123 × (6686)
+ 6123 × 6 which equals 36738
+ 6123 × 80 resulting in 489840
+ 6123 × 600 resulting in 3673800
+ 6123 × 6000 that equals 36738000

= 40938378
