Alright, let's work through 7980 times 2686 step by step
7980 × 2686 = 2686 × (7980)
+ 2686 × 0 producing 0
+ 2686 × 80 that is equal 214880
+ 2686 × 900 which equals 2417400
+ 2686 × 7000 resulting in 18802000

= 21434280
