Alright, let's work through 4891 times 1581 step by step
4891 × 1581 = 1581 × (4891)
+ 1581 × 1 producing 1581
+ 1581 × 90 which equals 142290
+ 1581 × 800 giving us 1264800
+ 1581 × 4000 giving us 6324000

= 7732671
