Alright, let's work through 8402 times 2593 step by step
8402 × 2593 = 2593 × (8402)
+ 2593 × 2 what gives us 5186
+ 2593 × 00 producing 0
+ 2593 × 400 that results in 1037200
+ 2593 × 8000 which equals 20744000

= 21786386
