No problem, we've got 4255 and 1256 to multiply
4255 × 1256 = 1256 × (4255)
+ 1256 × 5 what gives us 6280
+ 1256 × 50 giving us 62800
+ 1256 × 200 yielding 251200
+ 1256 × 4000 what gives us 5024000

= 5344280
