Alright, let's work through 2443 times 1780 step by step
2443 × 1780 = 1780 × (2443)
+ 1780 × 3 what gives us 5340
+ 1780 × 40 yielding 71200
+ 1780 × 400 that is equal 712000
+ 1780 × 2000 that is equal 3560000

= 4348540
