No problem, we've got 4257 and 2991 to multiply
4257 × 2991 = 2991 × (4257)
+ 2991 × 7 which equals 20937
+ 2991 × 50 giving us 149550
+ 2991 × 200 that is equal 598200
+ 2991 × 4000 producing 11964000

= 12732687
