Alright, let's work through 1581 times 5281 step by step
1581 × 5281 = 5281 × (1581)
+ 5281 × 1 yielding 5281
+ 5281 × 80 that equals 422480
+ 5281 × 500 yielding 2640500
+ 5281 × 1000 yielding 5281000

= 8349261
