Alright, let's work through 1005 times 5609 step by step
1005 × 5609 = 5609 × (1005)
+ 5609 × 5 what gives us 28045
+ 5609 × 00 that equals 0
+ 5609 × 000 producing 0
+ 5609 × 1000 producing 5609000

= 5637045
