No problem, we've got 3980 and 2173 to multiply
3980 × 2173 = 2173 × (3980)
+ 2173 × 0 that results in 0
+ 2173 × 80 producing 173840
+ 2173 × 900 which equals 1955700
+ 2173 × 3000 yielding 6519000

= 8648540
