Alright, let's work through 3912 times 5781 step by step
3912 × 5781 = 5781 × (3912)
+ 5781 × 2 that is equal 11562
+ 5781 × 10 giving us 57810
+ 5781 × 900 producing 5202900
+ 5781 × 3000 that is equal 17343000

= 22615272
