Alright, let's work through 7828 times 571 step by step
7828 × 571 = 571 × (7828)
+ 571 × 8 that equals 4568
+ 571 × 20 that equals 11420
+ 571 × 800 producing 456800
+ 571 × 7000 resulting in 3997000

= 4469788
