Alright, let's work through 5639 times 4395 step by step
5639 × 4395 = 4395 × (5639)
+ 4395 × 9 that equals 39555
+ 4395 × 30 that is equal 131850
+ 4395 × 600 resulting in 2637000
+ 4395 × 5000 what gives us 21975000

= 24783405
