Alright, let's work through 1647 times 1585 step by step
1647 × 1585 = 1585 × (1647)
+ 1585 × 7 what gives us 11095
+ 1585 × 40 producing 63400
+ 1585 × 600 that is equal 951000
+ 1585 × 1000 giving us 1585000

= 2610495
