Alright, let's work through 2583 times 8026 step by step
2583 × 8026 = 8026 × (2583)
+ 8026 × 3 what gives us 24078
+ 8026 × 80 producing 642080
+ 8026 × 500 producing 4013000
+ 8026 × 2000 resulting in 16052000

= 20731158
