Alright, let's work through 6591 times 3671 step by step
6591 × 3671 = 3671 × (6591)
+ 3671 × 1 what gives us 3671
+ 3671 × 90 producing 330390
+ 3671 × 500 that equals 1835500
+ 3671 × 6000 resulting in 22026000

= 24195561
