Alright, let's work through 1840 times 1408 step by step
1840 × 1408 = 1408 × (1840)
+ 1408 × 0 that is equal 0
+ 1408 × 40 that results in 56320
+ 1408 × 800 which equals 1126400
+ 1408 × 1000 producing 1408000

= 2590720
