Alright, let's work through 5026 times 3639 step by step
5026 × 3639 = 3639 × (5026)
+ 3639 × 6 that is equal 21834
+ 3639 × 20 that is equal 72780
+ 3639 × 000 yielding 0
+ 3639 × 5000 that is equal 18195000

= 18289614
