Alright, let's work through 5604 times 1115 step by step
5604 × 1115 = 1115 × (5604)
+ 1115 × 4 which equals 4460
+ 1115 × 00 that equals 0
+ 1115 × 600 yielding 669000
+ 1115 × 5000 producing 5575000

= 6248460
