Alright, let's work through 5645 times 2104 step by step
5645 × 2104 = 2104 × (5645)
+ 2104 × 5 which equals 10520
+ 2104 × 40 that equals 84160
+ 2104 × 600 producing 1262400
+ 2104 × 5000 resulting in 10520000

= 11877080
