Alright, let's work through 2005 times 1801 step by step
2005 × 1801 = 1801 × (2005)
+ 1801 × 5 that is equal 9005
+ 1801 × 00 that equals 0
+ 1801 × 000 that equals 0
+ 1801 × 2000 producing 3602000

= 3611005
