No problem, we've got 6401 and 1669 to multiply
6401 × 1669 = 1669 × (6401)
+ 1669 × 1 giving us 1669
+ 1669 × 00 resulting in 0
+ 1669 × 400 giving us 667600
+ 1669 × 6000 yielding 10014000

= 10683269
