Alright, let's work through 3642 times 3544 step by step
3642 × 3544 = 3544 × (3642)
+ 3544 × 2 producing 7088
+ 3544 × 40 that is equal 141760
+ 3544 × 600 resulting in 2126400
+ 3544 × 3000 which equals 10632000

= 12907248
