Alright, let's work through 2575 times 3991 step by step
2575 × 3991 = 3991 × (2575)
+ 3991 × 5 that equals 19955
+ 3991 × 70 giving us 279370
+ 3991 × 500 yielding 1995500
+ 3991 × 2000 yielding 7982000

= 10276825
