No problem, we've got 6459 and 3220 to multiply
6459 × 3220 = 3220 × (6459)
+ 3220 × 9 which equals 28980
+ 3220 × 50 that equals 161000
+ 3220 × 400 producing 1288000
+ 3220 × 6000 yielding 19320000

= 20797980
