Alright, let's work through 1581 times 413 step by step
1581 × 413 = 413 × (1581)
+ 413 × 1 giving us 413
+ 413 × 80 that results in 33040
+ 413 × 500 that is equal 206500
+ 413 × 1000 that results in 413000

= 652953
