Let's calculate 2643 x 1000
2643 × 1000 = 1000 × (2643)
+ 1000 × 3 that is equal 3000
+ 1000 × 40 that results in 40000
+ 1000 × 600 what gives us 600000
+ 1000 × 2000 what gives us 2000000

= 2643000
