Let's calculate 1787 x 6400
1787 × 6400 = 6400 × (1787)
+ 6400 × 7 that results in 44800
+ 6400 × 80 producing 512000
+ 6400 × 700 that is equal 4480000
+ 6400 × 1000 that is equal 6400000

= 11436800
