No problem, we've got 4127 and 2009 to multiply
4127 × 2009 = 2009 × (4127)
+ 2009 × 7 which equals 14063
+ 2009 × 20 giving us 40180
+ 2009 × 100 what gives us 200900
+ 2009 × 4000 that equals 8036000

= 8291143
