Alright, let's work through 1648 times 7609 step by step
1648 × 7609 = 7609 × (1648)
+ 7609 × 8 that is equal 60872
+ 7609 × 40 producing 304360
+ 7609 × 600 resulting in 4565400
+ 7609 × 1000 producing 7609000

= 12539632
