No problem, we've got 1709 and 6391 to multiply
1709 × 6391 = 6391 × (1709)
+ 6391 × 9 producing 57519
+ 6391 × 00 producing 0
+ 6391 × 700 which equals 4473700
+ 6391 × 1000 which equals 6391000

= 10922219
