Alright, let's work through 3021 times 7831 step by step
3021 × 7831 = 7831 × (3021)
+ 7831 × 1 yielding 7831
+ 7831 × 20 giving us 156620
+ 7831 × 000 giving us 0
+ 7831 × 3000 what gives us 23493000

= 23657451
