Alright, let's work through 5603 times 3847 step by step
5603 × 3847 = 3847 × (5603)
+ 3847 × 3 producing 11541
+ 3847 × 00 which equals 0
+ 3847 × 600 what gives us 2308200
+ 3847 × 5000 that results in 19235000

= 21554741
