Alright, let's work through 2009 times 2159 step by step
2009 × 2159 = 2159 × (2009)
+ 2159 × 9 producing 19431
+ 2159 × 00 which equals 0
+ 2159 × 000 what gives us 0
+ 2159 × 2000 yielding 4318000

= 4337431
