Alright, let's work through 2528 times 831 step by step
2528 × 831 = 831 × (2528)
+ 831 × 8 that results in 6648
+ 831 × 20 yielding 16620
+ 831 × 500 yielding 415500
+ 831 × 2000 what gives us 1662000

= 2100768
