No problem, we've got 4226 and 4255 to multiply
4226 × 4255 = 4255 × (4226)
+ 4255 × 6 resulting in 25530
+ 4255 × 20 which equals 85100
+ 4255 × 200 what gives us 851000
+ 4255 × 4000 what gives us 17020000

= 17981630
