No problem, we've got 4259 and 3521 to multiply
4259 × 3521 = 3521 × (4259)
+ 3521 × 9 giving us 31689
+ 3521 × 50 producing 176050
+ 3521 × 200 what gives us 704200
+ 3521 × 4000 giving us 14084000

= 14995939
