Let's calculate 3691 x 1244
3691 × 1244 = 1244 × (3691)
+ 1244 × 1 that results in 1244
+ 1244 × 90 resulting in 111960
+ 1244 × 600 that results in 746400
+ 1244 × 3000 resulting in 3732000

= 4591604
